Unlikely. The error from the antenna would be loss of signal. My syslog shows the system is unable to communicate with modem, which means either power or comm lines are broken and gap when bent.

My phone can produce the telephony error on demand, by clamping one or both ends of the phone (the black areas, not covered by the screen. With screen popped, squeezing the shift-fn area gets the error. Also, if one removed the battery partially and squeezes the area under the battery, there's a funny "unstuck" noise and I get the issue. I can no longer carry the phone in any pocket that generates compression (that is, all pants pockets).

Worst part is, it sometimes fails silently. Signal is good, all is well, but can't call or get texts.