@Guillaume_1978 Guillaume we have both fixed-wires and wireless devices; since have fixed ip addresses for the wired devices, we have no issues any more as well on the wireless devices.

@Nickatsikas All at 3rd of Feb I posted my results: 2. Added-reserved IP address for wired device; in the router ( see manual 11.4.3) - Limited issues with Internet connection for equipment (mobiles)...

@All what actions I have done since November: 1. replace SIM card with a new one; use now Micro SIM card without adapter; so no Nano with adapter Result: - Less issues with Internet connection for...

@MaWi any news or solution?? I encounter similar issues; with intermittent loosing Internet connection on TP Link Archer MR400