What specific bands do I need for Lycamobile?

[Marschel]

2G: 1900 MHz
3G: 1900 MHz instead of AWS (1700/2100 MHz) where T-Mobile has finished their refarming process.

[inquisitor]

Originally Posted by Marschel

2G: 1900 MHz
3G: 1900 MHz instead of AWS (1700/2100 MHz) where T-Mobile has finished their refarming process.

The UMTS coverage on 1900MHz (so-called PCS band) will not immediately replace existing UMTS coverage on 1700/2100MHz (so-called AWS band). While T-Mobile will probably rededicate some AWS spectrum to LTE, for now both frequencies will continue to co-exist. At this time for T-Mobile subscribers - including those of MVNOs like Lyca - AWS support is still much more important than PCS support.