Can anyone tell me what should occur when my phone is set to "4G recommended" ? I have a very strong 3g signal and a very weak (-130dBm) signal at home. When the phone is set to 4G, every few minutes it drops the strong 3g signal and switches to the weak 4g one, holds it for a few seconds and then reverts to the 3g one, rinse, repeat. Observed using Network Cell Info app.

My concern is will the phone drop calls during this constant switching if left on 4G? At the moment I set it to 3g at home but then I have to remember to switch to 4g when I go out.

Thanks.