Samsung dual sim smart phones

A dream of having dual sim in android smartphones has finally comes true. All thanks to samsung, it has reviled its dual sim smartphone in the market this thursday.
The new smartphones that are launched in the market by samsung are:-

• Samsung Galaxy Y Duos
• Galaxt Y Pro Duos

1. Galaxy Y Pro Duos:

•  has smaller 2.6" display
• similar specs
• full Qwerty keyboard

2.The Galaxy Y Duos:

• Similar to pro.

• 
  

Hidden GSM tricks

                     Tips and tricks

  

Type *#61# and dail calling button : to check call redirection status.

to cancel all redirections: ##002#

*43# to activate call waiting in your mobile phone 

to deactivate  it press #43#

 In any phone or in any network to enable conference call type **43# and you can make 7 calls at once

when the sim card pin blocked dail **042*pin2 old*newpin2*newpin2*

 

Blackberry Connect for Nokia Smartphone

To find Blackberry software and documentation suitable for your Nokia phone,go through this page for furthur details:

Blackberry Connect for nokia smartphone
 click on this to go to the requested page.
hope this will help you people.

how to reset your iPhone when your screen freezes

• reset iPhone settings
• setting> general>reset>reset all settings
• no media or data are deleted
• if that doesnt work

When Iphone wont turn on, screen freezes ....................

Try these tips so that it will help you to turn on your phone

• Press and hold the home button for min 6 seconds until when the application your are using doesn't quits.

• if that doesn't work then again turn off and turn it On again .Press and hold sleep or wake button which is on the top of the phone for a few seconds when you see a red slider then slide the slides and again press & hold the same sleep or the wake button upto when you can see the apple logo.

• if those two tips doesn't helped you then you have to reset your iPhone. To reset press and hold the sleep or the wake button and then the home button all at the same time for atleast 10 seconds untill apple logo appears

Try these steps it will surely helps you

Hard Formatting Codes

For Nokia:

*#7780# (custom reset)
*#7370# (Hard reset)

with sim card and battery should be charged only for WD2 and BB5 models



press *,3, calling key and on/off switch at once -only for WD2 model without sim +memory card but battery should be charged.

For Samsung:

*#2767*2878# (custom reset)
*#2767*3855# (hard reset)
with/without sim card but battery should be charged.

For L.G.

2946#*#

wiht/without sim card but battery should be charged.

If battery isnt fully chared then while formatting the set may be dead and you have to do software(flashing)

Some Mobile Formatting Codes

Master Reset / Reset All / Factory Default / Original Setting

Location : Menu> setting> phone setting.

For Nokia:

Default Code : 12345, 1234

For Chinese:

1122, 3344

Except Above Handsets

Default Codes :

• 0000

• 000000

• 00000000

• 1234

Problem cause of Charging IC

• charging problem
• no charging
• low charging
• auto charging
• displays "not charging" 
• display bad contact of charger in Chinese sets.

Charging IC

• Charging IC is used to charge the battery while charging it receives charging voltage from charging socket and then fed them to the power supply IC then only charge voltage to battery.
• In other words charging IC is used to charge the battery with the help of power supply IC.

Location of Charging IC

• located IF section
• BGA type
• Silicon (black) type
• Square shape
• In some sets combines with power supply IC
• If comes individual then written chaps (charging and control)
• if comes combined then written UEM (universal energy module)

Problem cause of Audio IC

The main problems that may occur if Audio IC is not working properly

• Set dead
• Incomming ok but not outgoing (MIC problem)
• Outgoing ok but not incomming (Speaker problem)
• Displays "contact service provider" (only in Nokia)

Audio IC

Location of Audio IC

• located in IF section
• Square shape
• BGA type
• Silicon (black) type
• Upper and right side of CPU
• In some sets combines with power supply IC
• if comes individual then written COBBA (common base band analog)
• if comes combined then it it called UEM (universal energy module)

Problem cause of Power Supply IC

• set dead
• set hangs
• Sim card can not be accepted
• Mobile over heating problem
• Frequently discharge battery
• Charging Problems:-
• No charging
• low charging
• displays :not charging (nokia only)
• displays "reconnect charger(nokia only)
• Auto charging

Power Supply IC

• Power supply IC is the main IC which gives voltage to all the circuits receiving commands from CPU.

• Power supply IC detects SIM card, receives information of SIM card and transfer them to CPU

• Power supply IC works as a charger. It reveives charging voltage from charger IC then charge the voltage to battery.

Location of Power Supply IC:-

• Located in IF section
• Upper and left side of CPU
• infront of Audio IC
• Silicon type
• BGA type
• Square type
• In some sets, Power Supply IC and Audio IC comes combined and there is only one IC instead of two near CPU.

What are the problems that occur when your mobile phone falls on the ground

We use our cell phone while walking, while playing . It may slip at any time from our hand, and when it falls various problem occurs.
Some of the problems when cell phone falls in to the ground are./

• your set is dead now...it will not switch on
• if it is ON also then your sets hangs frequently
• there will be network fluctation
• No network
• Low network
• Jumping network

The main reason for this problems is 26MHz crystal which is located inside the RF section of the mobile board.

Location of 26MHz (Reference) Crystal

• Located in RF section 
• It is metal type of IC
• It is rectangular in shape.
• Smaller than VCO (voltage controller oscilator)
• written 260, 2600, 26M, 26MHZ

Just locate that IC and replace it with new IC
And now your cell phone works properly. :)

Unlock iphone 3g and 3gs with no wi-fi method

I will post some of the procedures that will help to unlock the iphone 3gs and 3gs model with no wi-fi method.

Here are some tips and instructions

the base band must be 04.26.08 thru 05.13.04

it should be jailbroken

afc2add must be available to avoid error or use redsnow to jailbroke

use this software 
(click on the software to get the software)

by the help of this software unlock the iphone

now at last restart your iphone two (2) times

finally its unlocked and your are ready to use it

The above mentioned tips is 100% tested and working

How to find CPU in Mobile Mother board?

Central Processing Unit:- This IC works as a main IC in mobile motherboard. It does not work self but gives command to all the circuit with the help of memory IC (RAM,ROM). In other words we can say that CPU is the manager of mobile board.

Location of CPU

•  Located in IF Section.
• Big in size.
• BGA type.
• Square shape.
• Silicon type (BLACK)
• Looks like pins around the IC.
• In NOKIA, named as MAD, UPP.

Notes:-

•  In IF section which IC is big that IC is called as CPU if there are no pins in the IC.
• In IF section those IC which have pins they are called as CPU

How to know the model number of your handsets or cell phones?

How to know the model number of your handsets or cell phones?


1. Mobile model number is written inside the battery case of housing.

2. In some sets, it is written in-front of the housing.

If your mobile phone is NOKIA then

*#0000# with simcard or without sim card

Block Diagram of Mother Board for Mobile Phones

This is the basic circuit diagram of the mobile handsets and phones. This diagram helps to find out the root cause of the problems. This diagram also shows the relation between the IC's. which part is connected with which IC. For the general people also this helps to find out what is happen to your mobile set, they can find out.
For eg :- if the keypad is not working then you can find that your mobile's CPU is not working properly.
              if speaker is not working then Audio IC has been damaged. like this way we can easily find the problem and can go for the solution

A simple circuit diagram which helps to find out the solution for repairing.

Mobile dropped in Water

This is the most frequent accident that happens to all the people so it is good to know the tips to avoid cell phone being damaged if it is drooped in water or water gets into your mobile. Here are some following tips that are to be taken if mobile phones is dropped into the water. These are the home remedies but its better to take it to the mobile technician for repairing and maintenance.

1. Quickly take out your cell phone from the water, do not let it be more time in water.
2. Do not panic 
3. Clean your mobile with soft cloth or tissue.
4. Do not shake your mobile, it will allow water to flow over your mobile that will cause damage.
5. Do not switch it on, if u switch it on it will shot circuit and your phone board will be damaged.
6. Remove your mobile battery.
7. You have to make it dry so use hot air gun or dryer.
8. Seperate all the mobile parts from each other.
9. Keep those parts under the heat ( espically table lamp whose bulb is 100 watt)
10. Keep it for few hours
11. Try to switch on your mobile if it is ON then you are successful in rescuing your mobile phone from being damaged.
12. If still your mobile phone is not ON then take it to your nearest mobile service center to further help.

if your cell phone has stooped working

Sometimes your mobile stops working. Nothing displays in the screen. Your try to switch on the mobile but it does not switches on. If you put it in charge then it works but still you will not be able to switch it on. Then do not panic that your mobile phone is dead now. Remove the battery and again put it on, switch it on and if it displays like  "NOKIA", "SAMSUNG" then you can repair it...

How you can repair that problem is just update your software. Your software has stooped working. So download the flashing file from the internet and update your mobile phone from software updater program which can be downloaded from internet easily. The flashing device and software is necessary to update your software.

Update it and your cell phone is ready to use . :)

How to differentiate either there is hardware problem or the software problem in your cell phone?

Hardware Problem Case:-

1. Join plus (+) positive and minus (-) negative pins of battery connector in Trigger, if current level increases automatically then the cell phone has hardware problem.
2. Join plus (+) positive and minus (-) negative pins of battery connector in Trigger, if there is no reaction in current level then also it has hardware problem
3. Join plus (+) positive and minus (-) negative pins of battery connector in Trigger and after pressing on/off switch it will reach up to the certain point i.e (4,5,6,......) and after releasing on/off switch it will remain in same point i.e (4,5,6,....) then we can say that it has hardware problem

these are the some clues that will help to find the problem cause of hardware of the software


Software Problem Case:-

1. Join plus (+) positive and minus (-) negative pins of the battery connector in the Trigger and after pressing on/off switch it will reach up to certain point i.e. (4,5,6.....) and after releasing on/off switch it will come to zero (0) then the cell phone is having software problem.

NOTE:- Except Nokia and Sony Ericson cell phones for software all sets should be ON. If the sets are not on then we can not try software in those sets. So it has to be ON for testing software in cell phones

Trigger:- It is an electronic device which is used to test the battery meter and current level of the cell phones and battery.

Problem cause of IMEI number

IMEI is the most important number of the mobile phones. If it is damaged then mobile phone is useless so be careful.
Problem caused of IMEI no.

• Mobile restarts frequently
• Display "contact service provider"
• Display "sim not valid"
• Mobile hangs frequently

What is an IMEI number?

The most important number in cell phone (mobile phone) is IMEI number is GSM handsets.

International Mobile Equipment Identity Number 

• Number of GSM mobile set.
• Also known as Serial Number.
• It contains 15 digit number
• Can be changed later (but illegal act)
• To know the IMEI no. of your handset 
 Type *#06# (with/without sim)

written inside the battert case of the housing or carrier board.

It has the direct link to the network, if IMEI damaged the mobile displays "SIM not valid" or "contact service provider" 

the displayed number and the written number should be the same, if different, 

• IMEI number has been changed with software
• Housing or carrier board has been changed
• Motherboard has been changed

How to keep your battery life long lasting?

Here i will provide you some tips that will help to keep your mobile battery that lasts long.

• Do not charge your cell phone (mobile phone) for whole night it will decrease your battery life
• Do not charge your cell phone (mobile phone) if one line or two line of your batter is low
• Charge your mobile only when it displays low battery
• Do not make completely low your battery it creates problem in charging. 
• Do not use your mobile frequently when it displays battery low

Proper way of charging your mobile is the best way to keep your mobile's battery life lasting long
and the last thing is the minimum battery life is 2 to 3 years change it after 2 -3 years of period.

Problem Cause of Battery

Problem Cause of Battery

1. Set dead
2. Fast Discharging
3. Displays "not charging"
4. Displays "Local mode" (Local mode is not an software problem its a hardware problem)
5. Displays "Test Mode"
6.  Displays "contact service provider"
7. Displays "Invalid Battery" especially in Motorola handsets
8. No network problem (in some handsets)

Battery Problem

Problem caused by Mobile Charger:

1. No charging

2. Auto Charging

3. Low Charging

4. Displays "not charging"

5. Display "bad contact charger" in china mobile

If you find these problems in your mobile phone (cell phone ) then its caused by your battery.
Solution:

• change your mobile charger try the new one or  just try to solve your charger problem through mobile technician.