@qaroun Hi, may I have a screenshot of Advanced->Status page and system log file saved on Advanced->System Tools->System Log page. Besides, do you mean the issue happened after a firmware update? did...

@Spyder4G Glad to hear that it works fine. Thanks a lot for the update.

@borayds Hi, thank you very much for the feedback. May I know if the error still appears in the log when you enable the WPS? Actually the error in the log will not affect any function or performance...

@Hiccups Hi, may I know the model number of your smart phone? and could you please check which band or band combinations the smart phone works when using the same SIM card at same location? Besides,...

@Jorge-ENR Hi, could you please share with us screenshot of Advanced->Status page? we could check SIM card status, network type and signal strength etc.. Besides, there should be default APN profiles...

@drid Hi，I have replied in another post where you reported the same issue, we could follow up your case in another post: https://community.tp-link.com/en/home/forum/topic/568750