(UK iPhone 5, using EE 4G LTE) I've noticed that my iPhone 5 will hang on to a weak LTE signal right the way down to zero bars of signal displayed... this is great as whilst displaying zero bars of LTE I've had it speedtest at 17Mbps download and 15Mbps upload . Occasionally it will drop back onto 3G and get a full strong signal, but that's slower than the zero bars of LTE (or if I force it by disabling LTE in settings). If I make a call when it's on the weak LTE signal it will automatically drop off LTE to get a better, more stable, signal. This too is good behaviour . But if I try to send an SMS whilst on the weak LTE signal it'll just sit there failing to send. Retry after retry it will fail. I have to go into settings and disable LTE and then resend it. Then I'll also get a few SMS delivered to me that obviously weren't getting through when it was hanging onto the weak LTE signal. Does anyone else have this problem?