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Hark! Samsung Galaxy S users, your old phone is still alive. It is capable of rebirth. There are updates for this classic Android phone. Yes! it is Android 4.1, the brand new Jelly Bean. But, wait it is no official update from Sammy. I have found some useful pages for you who want Jelly Bean on Samsung Galaxy S. Update Samsung Galaxy S with Android 4.1 Jelly Bean Update Samsung Galaxy S I9000 to Unofficial CyanogenMod (CM) 10 – Android 4.1 Jelly Bean ROM Tutorial Install Jelly Bean on Samsung Galaxy S
I am considering to buy a external battery/power bank for my samsung galaxy S2 because the battery died so quickly.I search the keyword--external battery/power bank at amazon,find a lot brand,but many of them are too expensive.I find a Ravpower 5600 mAh external battery and its price and review are ok,it's in my budget.They told me the conversion rate of this external battery is very high,have reached 89%,so the quality is very good and can be guaranteed,but in fact,I don't know how to judge conversion rate and don't know whether it is good if the conversion rate reached 89%.So anyone know if the 89% conversion rate is good?