So this last week I have tried every possible way to activate a LS990 on T-Mobile USA. I tried a dozen or more online guides I followed all gave me the same result invalid sim or constant searching for signal. I have even argued wether the phone was truly unlocked with sprint customer service who proceeded to tell me the phone cannot work on T-Mobile. So I was about to give up... I gave it a try this morning, which was going to be my last. I finally got it to work best of all I had to do nothing it activated itself. I used Primes GSM rom and tried every other cloudy, stock you name it I have flashed it... I have had no luck until this morning... If anyone is trying to do this and not getting anywhere or about to give up PM me and I will tell you how I did it and this may help others stuck as I have been. There is no files or anything special. Call text and Data working 100% on T-MOBILE!!!!
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