Question about Samsung Blackjack SGH-I607 Smartphone

3 Answers

Sim not found / No SIM Error

I constantly get this error and sometimes even whil on a call, I apparently lose my sim somehow. I assumed the WM5 software was old because I bought the phone when AT&T was still Cingular and since I have even had my SIM card replaced to the newer AT&T version, yet this error still ocurs. Is there some firmware I can update to solve this?

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  • LSand Jun 18, 2008

    My Samsung Blackjack randomly says "No Sim", usually when I'm in the middle of a call or have just finished a call, but occasionally when I haven't been on a call at all. Seems to happen frequently when I've been on the phone with a family member with a prepaid card.

    I took it to the ATT Store and they had no idea what the problem was, but replaced the SIM card with a new one. It's still doing it, so it's definitely NOT a problem with the cards. Anyone got a clue? Better still, can anyone tell me what phone they prefer after giving up on the Blackjack?

  • MavSlate Jul 31, 2008

    I have the exact same problem. Replaced Cingular SIM with AT&T SIM but still have trouble. Anyone had any luck fixing this?

  • mrleary Oct 11, 2008

    i have a constant "no sim" error on my phone. usually works for a limited time after start up but eventually it always happens again.

  • lil beast Oct 12, 2008

    right in the middle of a phone call or a text message my blackjack will say no sim

×

3 Answers

Jiggling the connections didn't work. Flashing the ROM didn't work. I am now going to see if I can go back to the original CD and completely re-install Windows Mobile 5 (I never even looked at the CD before honestly so I don't know what's on it). If that doesn't work I'm considering trying the upgrade to Windows Mobile 6.

Posted on Sep 09, 2008

I have this too and it is driving me crazy! I also got a new sim card, which did not solve the problem. I thought perhaps it was because I had recently replaced the screen, which I had cracked, and maybe when I reconnected things in there something wasn't quite tight enough... but now reading this I doubt that's the case. Still, I'm going to try two avenues: 1) open the thing up and jiggle the little connectors in there, and 2) if that doesn't work, wiping the phone entirely and starting from scratch.

I have a number of aftermarket software packages installed including SmartToolKit, Opera Mobile, Papyrus, and Google Maps. Never had a problem with any of these in the past. The problem just started happening while I was in Delaware and has persisted ever since then. I had not installed any new software recently or anything. It seems to be worse when I'm in spottier coverage areas, like northeastern PA, though I've had it happen right in midtown manhattan too.

It's incredibly annoying. I did find you could turn the wireless manager off and back on and have a maybe 70% chance of it coming back ok -- prior to that I kept rebooting the whole phone which took forever and killed the battery and just ticked me off to no end.

If jiggling and/or wiping work I'll try to post back here.

Posted on Sep 05, 2008

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I am also having the same problem. Someone help us!

Posted on Aug 01, 2008

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Posted on Jan 02, 2017

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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:

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  • 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.
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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.

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Alot of cell phone stores and kiosks will also unlock any cell phone for you for about $30.00. You may have to leave the phone with them and pick it up later like an hour or two later if they are busy.

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I had the same issue, cleaning the contacts on the sim card did not help. BUT i went and got a new SIM, it did the same thing.. till i wedged some folded up paper into the sim slot on TOP of the sim card forcing it closer to the contacts. So far this is working for me atleast. good luck.

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