Question about Cell Phones
Posted by Anonymous on
What's your phone Brand and model?Your phone says "Invalid Sim" that means your phone is locked to particular network. To solve this problem, your need to get it unlock your phone. You can unlock your phone from Network lock using unlock code. Unlock code is the best and safest way to unlock phone. You can get the unlock code for your phone from any third party online vendors.If you have a Blackberry phone then you can get the unlock code for your phone at low cost from UnBBLock.com For, other phone models you can get the unlock code from MobileUnlockSolutions.com
Posted on Nov 28, 2013
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Posted on Jan 02, 2017
SOURCE: Showing INVALID SIM
try *2767*3855# this will reset the software and unlock your phone to all network, but make sure you backup all of your photos etc before tou type this code in.....Chris
Posted on Aug 08, 2007
SOURCE: CHINA MOBILE N92
You can reformat your unit.. just follow this instructions. just off the fone then, press together the key no. 3 Astiris and phone in.. press in sustained position then turn on the power switch then you can see your fone is starting to refurmat...
Posted on Jan 07, 2008
I have on ZTC K300 china mobile. I started to have this problem at this week...
My SIM 1 is working normal, but the second one says ''Invalid SIM card''. When i check the IMEI´s, this mobile have only one IMEI instead of 2. The mobiles with 2 IMEI´s is working normal... Have any thing i can do to add a new one IMEI to this phone, so i think and i hope will work?
Posted on Dec 11, 2009
I HAVE A CHINA SET SIGMATEL S90 DUAL SIM ONLY SIM 1 IS WORKING FOR SIM 2 SHOWS AS INVALID SIM FROM FEW DAYS PLEASE SOLVE THIS PROBLEM
Posted on Jun 03, 2010
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