M7: very poor wireless and WiFi reception

[msa6]

Just got hold of a (used) HTC One M7, and am surprised at how weak the cell and WiFi reception are. PRL and other software is upgraded. My wife's iPhone gets much, much better reception (both types of signal) in same locations. Any suggestions on what might be going on, or what I might do?

 

[benny3]

Just got hold of a (used) HTC One M7, and am surprised at how weak the cell and WiFi reception are. PRL and other software is upgraded. My wife's iPhone gets much, much better reception (both types of signal) in same locations. Any suggestions on what might be going on, or what I might do?

Have you run any speed test?