[Leica] OT: Sim Chip in Europe

[Brian Reid]

On 2018-08-07 12:36, Spencer Cheng wrote:
> 
>  I have vague
> memories that T-Mobile uses a slightly different set of frequency
> bands compared to other North American carriers.

They vary widely. See
     
https://cellphonesignalbooster.us/blog/lte-frequencies-and-bands-of-cell-phone-carriers-in-usa-canada/

T-Mobile uses 1900 MHz Band 2 LTE, 700 MHz Band 12 LTE, 1700/2100 MHz 
Band 4 LTE.

And see https://www.frequencycheck.com/countries/germany for example. 
Germany uses Band 3 (1800+), Band 7 (2600) and Band 20 (800 DD). I see 
no overlap with T-Mobile US frequencies, but sometimes phones have 
hardware for bands not used by the carrier.

If you want technical details and explanations see 
https://en.wikipedia.org/wiki/GSM_frequency_bands