Re: Need Sim,in wheelchair, can't go to store?

  What . Means is you can use an old IMEI to dummy in the ATT system to get LTE.  The oneplus is an awesome phone, it should have the opportunity to work to its potential.  

Check out Coverage Map app by root metrics.  If T-mobile and ATT are close in coverage, go with T-mobile.  If not, consider picking up a real cheap Gophone, even a used ATT smartphone, activate it, then use the IMEI.  You will have to call ATT and ask advanced tech support for help with this.

Its a pain in the neck, but if you need coverage, you gotta do.  

(FYI oneplus phones have no CDMA bands which are required to work on Verizon and Sprint.  ATT, T-mo and the rest of the world are using GSM technology. )