Showing posts with label cellphone and problems. Show all posts
Showing posts with label cellphone and problems. Show all posts

Audio problem found on some Apple iPhone 4S units


Some Apple iPhone 4S users are having audio problems while making a phone call. The person receiving the call can hear the caller, but not the other way around. The problem does not happen with every call, but happens enough to be frustrating for iPhone users. Some have been able to find a workaround to the problem and that might have to satisfy iPhone owners for now as there are no plans in the works to update iOS to resolve the problem.The iOS 5.0.1 build has fixes for battery life and some other bugs, but did not address the audio issue. The current seed builds also do not have a solution to the problem.

Both AT&T and Verizon customers have been affected by the audio issue, and while hanging up and re-dialing the call seems to be a solution, some have reported the problem occurring on back-to-back calls. Because the problem has come up, although less often, with models of the Apple iPhone 4 running on iOS 5, some believe this to be a software problem. Some theorize that the audio problem could have been on the iPhone 4 and that the newer hardware design on the latest iPhone version made the problem worse.

There have been some temporary solutions to the problem. There is the aforementioned workaround where the caller hangs up after he can't hear the person he is calling, and re-dials. Another solution is to use a headset when making the call, instead of holding the phone up to your face. Other things that have worked include rebooting the phone, asking Siri to make the call, and having the software on the Apple iPhone go through a full restore.

1,600 replies to the main thread have appeared on 109 pages on Apple's web site. The problem seems to have started when the Apple iPhone 4S was launched in November and continued through the iOS 5 update. Despite that rather large number focusing on one complaint, Apple has yet to make an official comment on the issue which is being called "Audiogate", following the model's "Batterygate" issue last year.

NOKIA C5-03 FORMAT SOFT/HARD RESET TO FACTORY SETTINGS

Here's the instruction on how to format or reset the Nokia C5-03 to factory fresh default settings.
Note: This may only advisable if the phone experiencing frozen or hang problems, burned out by excessive use or installing 3rd party applications. You may need to back up all important data stored on the phone before you proceed, this process will delete the files you installed on Nokia C5-03.



Nokia C5-03 Soft Reset:
This will not harmed your data . Soft reset only restores .ini files from Flash ROM on board memory of your Nokia C5-03.

1.). Dial *#7780#

2). Press Ok/Yes

Nokia C5-03 Hard Reset
This will delete your data and installed applications. Hard reset will restore your Nokia C5-03 to default factory setting.

1). Turn off Nokia C5-03

2). Take out the battery and reinsert it, turn it on

3). Dial *#7370#

4). Press Ok/Yes

Nokia C5-03 Hard Reset through button combination.

1). Turn Off the Nokia device

2). Pull out the battery and reinsert it back again, then Power it ON

3). Simultaneously press and hold *+3+Call Button (green/ok button)

compare to Samsung Galaxy S2 vs Motorola Droid Razr

Samsung Galaxy S2 vs Motorola Droid Razr, have you ever compare? Samsung аnԁ Motorola bе inflicted including everlastingly bееn аt loggerheads іn thе technological arena. Thе periodical οf thе refined Motorola Droid Razr hаѕ intensified thе jealousy between thе two companies. Sο, wе аrе comparing thе Droid Razr including Samsung’s best phone, Galaxy S2 i9100, οn thе foothold οf innumerable parameters such аѕ ergonomics, memories, connectivity, camera, аnԁ including thе intention οf.

Ergonomics:
Thе Droid Razr beats thе thinnest phone οn earth cultivate appointment, thе Samsung Galaxy: measuring 130.7 * 68.9 * 7.1 mm аѕ hostile tο thе Galaxy S2’s 125.3 * 66.1 * 8.5 mm. Thе even more-watery preview adds tο thе classiness аnԁ style οf thе phone. Thе Galaxy S2 even іf іѕ lighter weighing οnƖу 116g even аѕ thе Droid Razr weighs 127g. In cooperation thе phones аrе equipped including thе uber сοοƖ Super AMOLED Positive capacitive touchscreen. Keep pro thе cover pledge οf thе Droid Razr іѕ privileged thаn including thе intention οf οf thе Galaxy S2 thereby, donation υѕ including clearer texts аnԁ astute graphics. Moreover, thе Droid Razr’s cover іѕ 3D whісh amazes υѕ flush extra. Thе chic preview including thе intention οf thе Droid Razr sports beyond disbelief gives іt a сοƖԁ advantage fіnіѕhеԁ thе Galaxy S2.

Operating system:
Oυr extra refined arrival, thе Droid Razr, defeats thе Galaxy S2 bу equipping itself including a tougher Android, v2.3.5 (Gingerbread). On thе additional hand, thе Galaxy S2 runs οn v2.3 (Gingerbread). Thе v2.3.5 translation іѕ sturdier аnԁ іѕ best іn multi-tasking thаn thе v2.3 translation. In cooperation thе phones аrе powered bу dual-basic 1.2 GHz ARM Cortex- A9 processor.

Memories:
In cooperation thе phones house capacious domestic memories οf 16 GB storage space аnԁ 1 GB material. In cooperation allow a microSD up tο 32GB. Thе alteration іѕ including thе intention οf thе Galaxy S2 includes аn 8 GB memories ticket іn іtѕ wrap even аѕ thе Droid Razr comes including a 16 GB memories ticket іn іtѕ fit.

Camera:
In cooperation thе phones аrе near corresponding іn camera. Thе Galaxy S2 аnԁ thе Droid Razr іn cooperation bе inflicted including аn 8 MP camera аnԁ advanced facial appearance such аѕ сυt-rate budge blur, assumed character stabilization, аnԁ including thе intention οf. Thе awesome phone-cameras саn click thе cinema οnƖу ѕο thе way уου want. Thе record strip іѕ аƖѕο superb іn іn cooperation thе phones аt 1080p @ 30fps. In cooperation thе phones bе inflicted including a lesser camera οf 2 MP. Thе point οf financial hеƖр including thе intention οf thе Droid Razr hаѕ fіnіѕhеԁ thе Galaxy S2 іѕ including thе intention οf іt contains a record οf 720p іn іtѕ lesser camera.

Connectivity:
In cooperation thе phones bе inflicted including awesome connectivity аnԁ bе inflicted including copious facets such аѕ WLAN, 3G, Bluetooth, аnԁ including thе intention οf. Thе Droid Razr hаѕ a dual craft’s mast logic i.e. іt chains іn cooperation GSM аnԁ CDMA. In additional words, thе Droid Razr саn intelligently batter between thе two antennas thereby humanizing thе indicate greeting. Thіѕ іѕ turn enhances thе encourage feature. Thіѕ аƖѕο mаkеѕ thе Droid Razr a planet phone аѕ іt саn bе ancient іn аnу confront οf thе planet irrespective οf whether уου аrе a GSM οr CDMA consumer. Thе phones bе inflicted including thе conveniences οf GPRS аnԁ EDGE. AƖѕο, thеу possess Wi-Fi 802.11 a/b/g/n.

Battery:
Thе Droid Razr’s battery іѕ a Li-ion fuel οf 1780 mAh even аѕ including thе intention οf οf Galaxy S2 іѕ Li-Ion 1650 mAh. Sο far, thе Galaxy S2 gives a best normal bу donation extra stand-bу calculate аnԁ hаνе a discussion calculate thаn thе Droid Razr.

Motorola Droid RAZR vs Samsung Galaxy S II:

Problem and Solution of Nokia 6020

Problem: When your Nokia 6020 phone getting the message 'check multimedia settings' at startup.After pressing "Ok" it gives message sending failed.

Solutions:
1) Delete all MMS settings (Menu>Settings>Config. settings>Default config settings)then restore your phone and get new settings from your service provider.

2) Check start up settings of ur phone.

3) Virus Problem(alternate).




Nokia 6020 - Review:


Police in Britain now able to monitor cell phones

Police in Britain now able to monitor cell phones
In an age where we are constantly trying to find the balance between security and liberty, the Metropolitan, or Met, police force in Britain have garnered the attention of lawyers and privacy groups over its recent acquisition of a surveillance system that can monitor civilian cell phones.

The system, which has been purchased from Datong plc, can emit a signal that covers approximately 10 square kilometers, or 3.8 square miles. Phones within this area can be sent a signal that forces them to release their IMSI and IMEI identify codes. Once this occurs, the MET police have the ability to track the phone’s location in real-time, intercept communications to and from the device, obtain data about the user, and even shut off the phone entirely.

Neither Datong nor the Met have made clear whether the system targets a specific person or if the entire populous within range is affected by the technology. The Met has also denied comment as to whether or not it has used the system in conjunction with crowd control, such as situations with large amounts of protestors.

This withholding of information on the scope and use of the technology had caused concern from Nick Pickles, director of privacy and civil liberties campaign group Big Brother Watch, saying, “It raises a number of serious civil liberties concerns and clarification is urgently needed on when and where this technology has been deployed, and what data has been gathered.”

Barrister Jonathan Lennon has also questioned the device’s legality in reference to the UK’s Regulation of Investigatory Powers Act (RIPA) by saying, “How can a device which invades any number of people's privacy be proportionate? There needs to be clarification on whether interception of multiple people's communications – when you can't even necessarily identify who the people are – is complaint with the act.”

A spokesperson for the Met police said, “We can re-assure those who live and work in London that any activity we undertake is in compliance with legislation and codes of practice."

Leeds-based Datong also operates an office in the US and has had prior contracts with the Secret Service, Special Operations Command, and the Bureau of Immigration and Customs Enforcement. In February of 2010, Datong supplied the US defense sector with tracking and location technology making this something to watch domestically as well as abroad.

Free Cellphone Repair Tutorial Sitemap

This is where you can learn a step by step from basic to advance procedure on how to fix major mobile phone handsets problems such as Nokia, iPhone, Blackberry, Samsung, SonyEricsson, Motorola, HTC, Android,LG, Siemens, Benq and etc. for absolutely 100% Free.

All lessons herein were all simplified and a few general technical terms being reduced to make easy learning and understanding, Images and Pictures were also gathered and choose appropriately to support every aspects of learning. These tutorials covers the following step by step lessons:

LESSON 01
Basic Information How Cellphone Works?
Learning with Block Diagram on How basically Cell-phone works?

LESSON 02
Introduction To Basic Electronics
Ohm's Law, Series Circuit,Parallel Circuit, Identifying Electronics Components and Circuit Symbols, Resistors, Capacitors, Transistors, Diodes, Fuse, Coils & Inductors, Crystal Oscillators, RF & IF Amplifiers and Filters, EMI and ESD Filters,

LESSON 03
Preparing the Proper Tools For Repairing, Opening Tools and Tweezers, Soldering and Desoldering Tools, Muti Tester, SMD Rework Stations, DC Power Supply, Cleaning Kits, Reballing Kits, Working Table Equipments.

LESSON 04
Safety Procedures and Proper Handling of Tools and Test Equipments on Cellphone Repair
How To Use and Read a Multimeter Tester
Test and Check up Procedures on Basic Electronics Components

mobile phone repair, phoneinc:


How to Terminate Cell Phone Contracts

Get out your cell phone contract and review it for information on the early termination fees and processes. You need to have specific information on the cost and whether or not your carrier offers a pro-rated amount. A pro-rated amount deducts money from the termination fee depending on how long you have had your service. Calculate the amount you should owe if this is the case.

Review your cell phone plan. Know exactly what services you signed up for originally, this is very important information for you to be certain about.

Review your cell phone bills. Look at your detailed charges. If any of the charges differ from the cell phone plan that you signed up for this is called a "materially adverse" item. A materially adverse item may be grounds for you to terminate your contract without having to pay a fee. Go back to your cell phone contract and look for the "materially adverse clause" and read what your provider has defined it as.

Write down the pro-rated fee you expect (if any) and any materially adverse items (if any) on a sheet of paper.

Call your provider's customer service number and request to speak to a manager regarding termination of contract. Write down the day and time of your call and the name or employee number of anyone you speak to on your paper.

Tell the manager you wish to terminate your contract. If you have materially adverse items make sure you use the term "materially adverse" when talking about them. When you have completed the termination process write down a short summary of the conversation for your own records.

Cell Phone Contracts:


Mobile Phone Service Problems

The cell phone is an important device for many people. Many people experience problems with their mobile service, and are unsatisfied with their service provider. According to Consumer Reports, cell phone service is one of the lower-rated services in the past six years.

Limited coverage or network

One of the problems that people experience with their mobile service is the limited coverage. There are certain areas in the house, such as the basement, where their cell phones don't get reception. There are also places without cell phone reception, even in wide open spaces, and these are generally called "dead cell phone zones."

Customer Service
Another complaint that service providers get is in regards to customer service. Customers complain that agents working for service providers are not very helpful when discussing issues about their phones and plans. A cell phone service provider, Sprint, said that even if they have tried to solve customer issues, customers may continuously contact the company for complaints even as many as 100 times a month.

Automatic fees
Customers may notice that their cell phone bill is higher on a certain month, possibly because of fees that the service provider tacks on without their knowledge. This may include fees for additional services the customer didn't sign up for. To avoid having to pay for these fees, customers may need to check the itemization of their bill and contact their providers to take some services off.

Penalties
Another problem with mobile service providers is the penalties charged. Many view early termination fees as unfair, where consumers have to pay service providers amounts up to $200 for canceling their contracts. Other fees include activation fees and number portability fees.

Solutions
Cell phone providers have decreased early termination fees and have now implemented pro-rated fees for canceling contracts early. In terms of coping with limited network, cell phone service providers have interactive online coverage maps by which consumers can check signal strength in the areas they spend the most time in. Customers may also switch service providers to one that suits them better.

Problems with Mobile IP and Their Solutions



Mobile IP, the outcome of the convergence of mobile communication technologies and the IP network, is the core technology to implement NGN applications in traditional networks. It supports network mobility, two-way access, and real-time multimedia services.

As a recommended Internet standard, Mobile IP is the earliest solution to mobility management of IP network. The IETF (Internet Engineering Task Force) gives a complete description of Mobile IP in RFC2002. Along with the development of IPv4 to IPv6, Mobile IP is also evolving to Mobile IPv6.

Problems with Mobile IP:

Although growing rapidly, Mobile IP still has the following problems:

(1) "Triangle routing" Problem
The Communication Host (CH) has to send packets to the Mobile Host (MH) via the Home Agent (HA), while the MH sends packets directly to the CH. As the communication in the two directions follows different routes, the problem of "triangle routing" arises, which leads to low efficiency especially when the MH is far away from the HA and the CH is near to the MH.

(2) Handoff Problem
Handoff problem means that the HA sends the IP packets of the MH to the original foreign network via the tunnel because it doesn’t know the latest Care of Address (CoA) of the MH during the period starting when the MH leaves the original foreign network and ending when the HA receives the new registration address of the MH. As a result, these dropped IP packets have an influence on the communication between the MH and the CH especially when handoff occurs frequently or the MH is far away from the HA.

(3) Problem of Intra-Domain Movement
The frequent intra-domain movement of the MH within a small area will lead to frequent handoff. Consequently, a great amount of registered messages are generated in the network and the network performance is greatly affected.

(4) QoS Problem
In the mobile environment, it is hard to provide QoS over Mobile IP due to dynamically varying wireless network topologies, limited network resources, unpredictable effective bandwidth and high error rate.

Solutions:

Solution to "Triangle Routing" Problem For Mobile IP, routing optimization is necessary because all packets sent to the MH shall pass through the HA but the route may not be the best. After receiving the packets sent by the CH to the MH, the HA notifies the CH of the binding information about the MH, i.e., the current Foreign Agent (FA) address of the MH, and the CH encapsulates the packets and establishes the tunnel to the FA for transparent transmission. The binding information is transferred via a definite port number. If the MH moves again, the new FA will transfer the updated binding information to the old FA to ensure that the packets are transferred to the new FA. And meanwhile the HA gets the updated binding information so the subsequent packets will be transferred directly from the CH to the new FA. The mobile IP with route optimization sets high requirements on the CH. The CH shall have the ability to obtain the binding information, encapsulate the packets and establish the tunnel. Therefore the CH protocol stack needs lots of modifications.

Alcatel-Lucent Wireless IP solutions: Wireless All Around: