I've EDC'd emergency phone chargers for few years.... I like the ones that use rechargeable AAs, like this
iGo for smartphones. With AA's I can get multiple charges by taking more batts, if off-grid camping for example, and I can always use spare AAs in a number of other portable electronic devices I carry, not to mention my flashlight. Doesn't really have a flashlight, though, unless you count the blue LED indicator as a moonlight flashlight (which I find actually quite useful).
For even more power, enough to charge an iPad, or anything else USB powered, including being a reasonably decent portable solar/USB AA charger, I'd recommend the
Goal Zero Guide 10 Plus .... this one even has a dedicated "flashlight" function. Single junk LED, I'd guess around 5-10 lumens, but what the heck... Not really impressed by G-0's solar panels though.