Always been iPhone since Nokia went Symbian. Did have a brief go with the first Nexus but found early Android very buggy so went to Apple and stayed there. Went with 3 at first as they had good data deals and it was OK while they had Orange 2G fallback but once that got turned off it was hopeless. Considered going to EE but got an O2 payg sim to try in my 4S and the difference between 1800 and 900 2G is big. If you stand in one place with the phone in the air they can be similar but the subtle difference is when you pull the phone out of your pocket or out of the door pocket of the car. 900 signal, 1800 no signal. 900 is just far better.

Went with O2 as they have a few areas of 3G900 around here where VOD do not. So if I had to choose calls over data, at least I might have 3G in a few places. However, it turns out that 3G900 is as useful as a snake on a plane. 5 bars and no data. Nothing. Useless.

So, while getting very frustrated that I have to choose between good calls or good data while we wait for 800 and VoLTE etc. I decided to try a dual SIM solution. Ordered a ZTE Blade S6 fro Amazon and a VOD and EE nano sim which all arrived the next day for £170 total. Topped up both (EE was a nightmare for a change......) and got it all working. Set the VOD sim for calls and the phone will always choose the best SIM for data so used the EE one (£15 p/m 2GB pack is OK for me).

The phone looks and feels a bit cheap, I admit. It's no iPhone, more of a toy. There are more expensive options. But it does work and is pretty quick. Android 5 is OK if not a patch on IOS in my humble view. There are some things which I prefer but many things could be more intuitive. Battery life on this phone is also a concern but I knew that before I got it.

But, until on of the networks get's their arses in gear and put in 800 LTE with VoLTE and Wifi calling, this is a very good option for me. I can also quickly switch the phone to make calls on the EE sim should I be in a place where it's better. For now I have 900 voice and EE data and it's cost me very little.

There are also cheaper options out there for dual sim phones. Heard good reports about the Jiayu s3. Around the £140 mark

I just got the dual sim Moto G second gen and it's not bad for the price. It's 3G only and has some limitations as a budget phone but is still probably one of the best android phones for the price range (£135) and has regular updates like Lollipop and comes with virtually stock Android an no crap bloatware.

As far as I can tell there aren't really any 4G (UK bands) dual SIM phones around yet, the Chinese imports don't usually cover all the 4G bands required in the UK.

I bought this phone for work and home SIM so I only carry one phone around all the time.... very pleased with it so far.

I looked at that one but felt the ZTE was thinner and had a better cam. Plain OS is a benefit of course.

Having spent a good deal of time with the phone over the last couple days I'm actually coming to appreciate Android. Once you learn the bits and bobs it's actually pretty damn good. Phone good to. Just works.

Not so sure that is correct regarding chinese dual sim. Most of the latest phones support 800/1800 and 2600 4G. They must work fine?

I don't know for sure but certainly many of the Chinese 4G phone only covered some of the 4G bands used here, Three and EE's for example. This is no doubt changing and sure someone can give more accurate info than me.

The ZTE supports 800, 900, 1800, 2100 and 2600. Works perfectly on EE 4G.

Most of the 4G phones from Chinese manufacturers like Huawei & ZTE that are intended for European markets will usually be able to handle LTE on Bands 3 (1800 MHz) and Band 20 (800 MHz) and often Band 7 as well (2600 MHz), but importing a phone from the same manufacturer from Asia which is mainly intended for the Asian market could well lack Band 20 coverage. Almost all of them from my experience will handle Band 3 and the majority Band 7 as well, along with supporting various TDD-LTE bands as well that are being deployed in that part of the world. This isn't a problem if you're intending to use the phone on EE and (to a slightly lesser extent) 3 given that especially the former is mainly using Band 3 for its network with only limited planned use for Band 20 - but it's going to be a bigger headache with Vodafone (unless you're within Band 7 coverage) and O2 - it's still then even worth checking that without Band 20 LTE support that they they support HSPA or 3G on 900 MHz at least, as some are 2100 MHz 3G only, which could prove to be a headache for data access in some places on those two networks.