T-Mobile and its main prepaid brand, MetroPCS, had some exciting news to share with us this morning. Of most importance to us Android fans is the arrival of yet more promising options for those on a tight budget. From July 22nd, T-Mobile will start selling the HTC Desire 626s, Samsung Galaxy Core Prime and Galaxy Core Prime. MetroPCS will also be offering the 626s and Grand Prime, but won’t launch the HTC until August 3rd, while the Core Prime was made available on July 13 (Monday just gone)… expand full story