Hello @ SiB Your R11e-LTE6 has some CellLock firmware? (and V022 version) interface lte at-chat 0 input="at*readver" output: *READVER: release_version: R11e-LTE6_ V022CELLLOCK release_time: 20191125_13_49 ap_version: rls2476 . Output from my modem looks different: interface lte at-chat lte...