My suggestion... Get the phone unlocked and go onto the £10 a month GiffGaff contract - keep current phone Is there anything the S2 does not do? Most phones now on 24 month contract - work out monthly price less £10, times that by 24 and that's what your 'free' phone will cost
iPhone user here and they are very good and easy to use and should be less prone to viruses campared to android handsets! Depends if you have brought lots of apps from the google play store for android? I know the Samsung galaxy S3 and S4 are very good
Three mobile also do a very good sim only 30 day rolling contract called the one plan includes as follows for £25 a month 2000 any network minutes 5000 three to three minutes 3000 texts Unlimited data The last is true as I don't have home broadband and just use my phone and regularly download over 15gb a month via my phone, you can get the same plan on a 24 month contract with most phones for a little bit more
I can get a galaxy s4 with unlimited texts minutes and 2Gb of internet for £30 a month seems reasonable
Got a HTC one phone , Excellent phone an build quality , made from billet alloy . With 3 network . Far better than i phones . Samsung phones are also pretty good .
Buy from Google Play store for £279 and then get a sim only contract. I currently pay £8.50 / month for 300 minutes, unlimited texts and 500mb of data. https://play.google.com/store/devices/details?id=nexus_4_8gb&hl=en_GB
S3 here too I wouldnt mind gettin the s4 just for its camera , but that will be fully ported to the s3 soon
S4 mini for me, had iphones for 4 years and dont feel i would go back now to be honest, the only downside with the S4 mini is the battery life but in saying that you can get spare batteries on evilbay and you can swap the battery in seconds
the battery life near doubles if you use the auto screen brighness and keep the wifi and that turned off when you arnt using it.
+1 , I always keep mine on auto brightnes and if im headin away over night without charger , just knock the wifi and mobile data toggles off , I could have 30 - 40% left the next day