@Vik-2-R There is a beta EU firmware for JIO 5G isp. ** Be warned ** that you may loose access to other isp and there reports of not being able to restore the stock fw!!...

@MobileRouter Out of interest, I tested my samsung a25 phone on mobile data - isp tpg/vodafone australia. It exhibits similar behaviour to my MR600v2 (also TPG -updated to latest EU FW). When Idle or...

@m7200-Spain-Dev If it won't take the latest firmware, Try an older one.

@vegeta_ssj8 https://www.amazon.com.au/sim-adaptor/s?k=sim+adaptor Or a mobile phone/repair shop near you.

@vegeta_ssj8 You mean the adaptor from nano to micro that MR600 v1/2 use Or the SIM slot itself ? In the case of the SIM adaptor tray, Its very easy to just get it replaced.

@MARko19 Test it at least busy times; Midnight to early morning. If speed is normal; then its congestion If still the same, Put the SIM card into a phone at same location and re-test.