I have some help! My phone will probably last the same length of time as yours but I bought a portable battery charger a few months ago. There are quite a few on amazon.co.uk and they keep my phone going a lot longer!

When I’m out I usually have Cardiotrainer tracking my path and speed, Podkicker playing a podcast and now Ingress hacking portals. There’s also Swypepad and Llama profiles running there if you’re interested. I should probably shut those last two down when I’m out though.