Ring spy door cam

so had the ring spy door cam for a few months now and all worked fine but since upgrading my phone to the samsung s21 on the 29 jan 2021 i can no longer live view on mobile network it will connect occasionally but its very pixelated and bad sound and only 1 out of 10 times it will connected wifi works fine and my wifes s20 works fine we are both on the same network EE and 4g connection at work is very good and at home to test if i turn wifi off its around 3 bars so good also i also pick up 5g at work and still no betterif i do a speed test after trying to connect a door knock its very good my old phone was the samsung s10 and had no issues with this the new s21 i have turned off data saving well it was already off i just made sure it was off i have tried a few fresh installs still no different the rapid ring app made no differencei can use my s21 at work for example to stream my 4K cctv with no issues at all not a ring product but shows the connection speed ect is fine has anyone got any ideas as the ring has no use if it cant be answered when i need to at the moment i am lucky as the kids are still at home but as you know this changes from the 8th of march thanks Baz