I have a Samsung S10 on monthly contract. I think 30GB of data. My phone is constantly changing from 4G to 4G+. The minute it goes to 4G+ I cannot access anything. Emails, websites, live apps; anything that requires data just stops. I have turned off data and it still picks up 4G+. Is there anyway of changing settings so it stays on 4G as that works perfectly.
You can't select 4g or 4g+ but you can select 3g only which may help.
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Currently using: Pixel 7a (O2 & Lyca), One Plus 6 (Sfr), iPhone 12 Pro Max (Vodafone)
It would be great to hear if the suggestion from 
