Hi, wasn't sure where to post this and hope it's an okay topic. I'm looking for a cell signal booster for my home. I need it for straight talk GSM and CDMA LTE phones and would also like it to work on my flashed cdma data device. I've been looking at the Chinese sites and can't figure out if I need 850 mhz, or the 700 range for LTE, or what! I'm obviously in the US with Straight Talk, but have a bad signal inside the house. I'm looking at Chinese sites, Aliexpress especially, because I don't want to spend a lot. Thanks for any help and/or opinion!!!