I've been using my Hauwei 5776 for about a year and at our present location the signal has been a weak 3G but I think 3 must have been doing some antenna up-grades because yesterday turned MIFI on and it went straight to 3 with a 4G signal (it used to search for EE first because that's what it was on when I bought it and unlocked it) and wow what a difference, pages open really quick and I don't have to worry where I put the MIFI. I had thought about getting an aerial to help but not needed now. 