Originally Posted by
FlyingDoctorwu
I had really high hopes about T mobile. Grabbed a SIM today to test the network. In my iPhone 6s I get LTE all over my house even the basement. Speedtests download of about 10 Mbps on the 1st two floors with my basement at 3 Mbps. Outside I'm at 15 Mbps. Overall a drop from the performance I get with ATT. Pop the sim in my wife's iPhone 6 and my LTE coverage is abysmal. I got one bar on the ground floor; rest of the house is 4g with barely any signal in the basement. Speedtest on 4g is about 2.5 down. So definitely band 12 that the iPhone 6s has is making a huge difference. So I would need to upgrade 4 phones to get the band 12 functionality. Tomorrow I test at work. I can live with using wifi at home; however at work I need LTE.
Fdw
Yeah Band 12/13/17 is essential on ANY network device (e.g. Band 12 is T-Mobile low band - interoperable with AT&T Band 13 now, Band 13 is AT&T legacy low band, Band 17 is Verizon low band). Band 12 is the newest of the low band frequencies and generally newer devices have support for this.
For your house, T-Mobile on POSTPAID plans can give you a free LTE Cellspot (Pico-cell) for your house. This will use your home Internet provider. I tend to see that using this has lowered battery consumption on the devices we use in the house. - We are mostly on WiFi at home anyway, this is WAY more reliable than WiFi calling.