From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tony Lindgren <tony@atomide.com>
Subject: Re: [PATCHv4] phy: mapphone-mdm6600: Add USB PHY driver for MDM6600
 on Droid 4
Date: Sun, 25 Mar 2018 17:30:29 -0700
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* Tony Lindgren <tony@atomide.com> [180326 00:24]:
> Looks like on /dev/ttyUSB4 doing AT+COPS? or AT+CREG? won't work
> while on /dev/gsmtty1 they work. So /dev/ttyUSB4 seems to a subset of
> what's available over n_gsm on ch1. Anyways, good to hear that
> /dev/ttyUSB4 can be used to debug voice calls :)

Hmm and now they work on /dev/ttyUSB4. Maybe I had SIM card
poorly connected..

Tony