Question about Samsung SGH-U600

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Phone locked i have a samsung hero mobile phone. few days ago i insert a airtel sim and then my phone locked.then i went to samsung care and they charge Rs. 110 to me, and open the lock.now i am inserting a new sim card of tata indicom. mobile is not accept it. samsung care says all old phone will work with only sim card before you perchesed year 2007.how can i use new sim card with this phone.

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  • darweid Dec 05, 2008

    My haier phone of lock, Please tell to me,how to open?

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D 1200 tata haier mobile phone lock please solve the problem

Posted on Nov 08, 2008

  • happy97803 Nov 08, 2008

    haier d 1200 mobile permanently locked please solve the problem

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Posted on Jan 02, 2017

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Insert sim card


What is your problem with your Sim card? Is your phone shows the "No Sim" or "Insert Sim" or "Sim Rejected" or "Invalid Sim" error? If it is so i am here to help you. If your Samsung SGH-E840 shows the "No Sim" or "Insert Sim" error then remove your Sim from your mobile and place it again correctly. If your mobile shows the error message "Invalid Sim" or "Sim Rejected" the your phone is locked to a particular network. To fix this problem you need to unlock it. Use unlock code to unlock your Samsung SGH-E840. To get the code you have to submit network provider, country and IMEI number of the mobile. Make sure yourself whether you have knew the network provider to which your mobile is locked, country to which the locked network belongs to and IMEI number of your mobile. If not you can find the IMEI number in two ways:
1)Go to Options>status
2)Find IMEI on the back of your mobile, behind the battery.
3)Type *#06# and press call button. It will display your IMEI number.
You can find the network provider to which your mobile is currently locked by switch off your mobile and switch on it again. A logo of the locked network will get displayed on your mobile screen. After knew all these get the code from the site Mobileunlocksolutions.com ,by submitting these to them. Unlock it yourself using unlocking instructions which is given in the site itself.

Jul 08, 2013 | Samsung SGH-E840 Smartphone

1 Answer

X red color sign inside battery meter while charging


pls try to install moto software through gsm_ forum by Google search

Jul 17, 2009 | Motorola Mobility Moto Q

2 Answers

Hi i have O2 atom an using airtel india sim an wnt,s to have airtel gprs setting,s for my phone


Hi buddy, all u have to do is call customer care @121-> select the option to talk to the customer care rep.-> he/she will give you the direct no. of gprs or else they will themselves send the gprs settings to ur cellphone. u will recieve three msgs  1>gprs settings for your cellphone. save these setting? press yes 2>the gprs settings have been sent to your mobile please save those settings and enjoy airtel live! 3>thank you for calling airtel assistance. Have a great day. Thats it!!!!!!! Have a great time Buddy!!!!!!!!!!!!!!! :):):) Prasanth83 

May 13, 2009 | O2 Xda Atom

6 Answers

SIM lock only AIRTEL SIM works


you may have locked your sym card. if you did, your phone would prompt you for a password when it turns on, just to access the network. try some basic codes like 0000 or 1234. these are most likely the factory defaults.

Mar 25, 2009 | HTC Touch P3450 Smartphone

1 Answer

SIM lock only AIRTEL SIM works


hello
for this what you can do please insert the sim and then go to
go to stsrt - settings- phone - network then try on both the modes ie in automatic and manual mode to search for network

Mar 24, 2009 | HTC Touch P3450 Smartphone

3 Answers

I need the unlocking code for samsung u600 phone


Try 000, 0000, 111 or 1111.


Please rate FixYa!

Jan 13, 2009 | Samsung SGH-U600

3 Answers

Unlock code


SIM Cards and Unlocking your Phone What is a SIM?

Subscriber Identity Module (SIM): A smart card containing the telephone number of the customer, encoded network identification details such as: Call Forwarding, Caller ID, etc., the PIN, and other user data such as the phone book. T-Mobile customers can move their SIM card from any T-Mobile branded phone to any other T-Mobile branded phone without the need to contact Customer Service to activate the new phone. Your rate plan and phone number will follow your SIM to the new phone.

SIM Error Messages:

  • Invalid SIM: This error means that the SIM you have inserted into your phone is either inactive or is not compatible with our service. You may purchase a new SIM card from a T-Mobile retail location. Locate a T-Mobile retail store near you.
  • Insert SIM: Your SIM is either not inserted in your phone or is inserted improperly. Please remove and re-insert your SIM card. If you continue to receive this error message, your SIM card or phone may be defective. You may take your phone and SIM to a T-Mobile retail store for further assistance and a free SIM card replacement if necessary. Locate a T-Mobile retail store near you.
  • Unregistered SIM: This error may occur if your SIM card is not fully activated or if the SIM card registered to your account is different than the SIM you have in your phone. For assistance with this issue, please contact Customer Service.
  • SIM Not Ready: This error occurs when you have just powered your phone and is due to the phone not being fully initialized. Please wait a few moments before accessing your phonebook or placing a call.
  • OTA OK: This message is displayed when your phone receives a network update, phonebook download, or an Over-The-Air t-zones or Picture Messaging configuration. NOTE: These messages are free of charge and will not be billed to your account or pulled from any text message bucket.
  • Enter PUK: These errors can occur if you have entered your SIM PIN three times incorrectly. If you receive this error message, please contact Customer Service for a PIN Unblocking Key (PUK) to restore access to your phone.
  • Check card, Card Blocked See Supplier, Blocked, SIM Blocked, or Contact Card/Service Provider: These errors may occur if you have entered your PUK ten times incorrectly. If these errors display your SIM is unusable and you will need to purchase a new SIM card. You may purchase a new SIM card from a T-Mobile retail location. Locate a T-Mobile retail store near you.
SIM PIN:

A SIM PIN can be used to prevent access to your phone. When enabled, your phone will prompt you for the SIM PIN when the phone is powered on. Entering the wrong PIN will prevent you from making or receiving calls. SIM PINs are different from a Security Code that your phone may use to secure other phone functions. Please check your phone’s manual for further security details.

T-Mobile SIM PIN numbers are set to default values before purchase. If you change your SIM PIN, it is recommended that you keep record of the new PIN in a safe location. T-Mobile cannot retrieve a lost or forgotten SIM PINs.
  • SIM PIN1: 1234
  • SIM PIN2: 5678 (Only available on select phones)
SIM Unlock:

T-Mobile branded phones operating on the T-Mobile network may only use T-Mobile SIM cards. To use a T-Mobile branded phone on another wireless carrier's network with a non-T-Mobile SIM card, you must first request a "SIM Unlock" code from T-Mobile. Conversely, if you have a phone from another North American wireless carrier, you may need to request a "SIM Unlock" code from that carrier before being able to use a T-Mobile SIM card on the T-Mobile network.

SIM Unlock Requests:

T-Mobile customers must meet the following eligibility requirements before contacting Customer Service to request your SIM Unlock code.

The following restrictions apply to all account types:
  • T-Mobile can provide SIM Unlock Codes only for handsets sold by T-Mobile USA, with the exception of Danger Sidekick devices. T-Mobile can obtain SIM Unlock Codes for companies acquired by t-Mobile USA (VoiceStream, Aerial, Omnipoint, SOL, Digiph, PCS One, and Powertel).
  • SIM Unlock Codes will only be provided after your account has been active for 90 days. Only one unlock code may be provided per customer every 90 days.
  • No SIM Unlock Codes will be provided within the 14-Day Buyer's Remorse period. Customers who purchase phones in CA California or via Amazon.com are granted a 30-Day Buyer's Remorse Period.
  • SIM Unlock Codes are not always available from the Manufacturer. However, T-Mobile will make a dedicated effort to obtain the SIM Unlock code. Note: Other restrictions may apply depending on account type.
Goodluck

Jan 10, 2008 | T-Mobile Wing™ Smartphone

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