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. :)