[Q] How do we stop constant signal type shifting?

view story

http://forum.xda-developers.com – I was wondering does anyone know how to stop the phone from constantly changing signal type within a certain network setting? So if it finds moderate signal strength in one type it doesn't start aiming for the skies? So for instance you have your network setting on the 'any of 2/3/4G' option, you have a decent 4-bar 3g signal, and then it suddenly decides to go for glory and get a crappy/weak 4g signal and then keeps flipping back and forth! In the UK signal strength varies from street to street literally so it would be ideal to have the setting on 'any of 2/3/4G' with the phone attempting (HowTos)