Nokia is a brand I would trust for a long and reliable battery back up and this BL-F does just that- lives up to the promise of Nokia. I bought it after my old Nokia handset has gone weak with excessive usage and I can proudly say I have used my phone for a decade. Yes that is how long and hence I was in need of a 950 mAh battery to continue using it. The talk time offers is pretty good and I charge my phone once in three days which is think is awesome, saves electricity and is ideal if am travelling. So, this is a no frills to the point product and if you are a Nokia user like me go for this one.