I made a pretty dramatic fix for this. I stuck my sim card into an iphone se. Works like a charm
Can't say I've had any speed issues with three. The below is a test last week from my living room!
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Where do you live? The highest download speed I ever obtained was around 50-60Mbps when I switched to EE 4G as one of their first customers and I think I had the entire bandwidth to myself! With the popularity of 4G devices I've only ever seen speeds decrease since.
I have got the 10.1 public beta too and also confirm it is infinitely better. It is almost but not quite perfect. Haven't had a chance to test if it connects to the 800mhz spectrum yet, and as ringingup said I think it still prefers a strong 3G over weak 4g sometimes, but it still switches quickly and readily back and forth, and the signal bars seem to indicate better signal strength in the same places compared to iOS 10.0.2
On Vodafone U.K. and can't get 3G or 4G in places where I previously could on my 6 and se. Tried ALL the usual recommended fixes, none work. Just off the phone with AppleCare and they said it's a known issue that engineers are working on, but there's no fix yet. Mine is a rose gold 128gb 7 plus running the latest beta 3 with Vodafone 26.0 carrier settings.
So Apple support/care phoned me this morning. They are aware of the problem and engineers are working on a fix. His advice was leave the idle for 2 mins and it should connect to 4g again lol no timeline on the fix actually a wasted call. Then I phoned the Apple Store in Belfast and they weren't aware of the fault ???? Advised me to bring the phone back and they would look after me
My friends are on o2 as well and they are definitely effected
Yes this happened to me on Bluetooth on my Citroen they could hear me but I couldn't hear them and it seems just to connect to Bluetooth when it feels like it lol3 are definitely doing something as I'm still on iOS 10.0.2 and carrier 25.1 , as I travel around a lot I'm seeing the phone switch between 3G and 4G more than it has been , but I'm also getting lots of loss of internet altogether from time to time.
On another note and off topic , there are other bugs with the iPhone 7 and 7 plus , mic issues , getting fed up of people saying they can't hear me during calls