Summary: Have a 6233 and a 6288th Battery purchased from Expert Mobile. The old battery (4 years) Extremely phone users, still holds 2-3 days. Me too little. The new Expert of Mobile also holds 2-3 days. In real use it is after 2 days completely empty. Standby about 3 days max. without the Fon touching. Is in 10 minutes charged curious soetwas. Turns even after acceptance of the work, for example. On the last bar after just a few minutes once completely. I know something like this only by an ancient battery. In my opinion, the cheap copies, however, are not originals. If you have a high-quality phone once but no more pleasure because the battery is plagiarized. What a pity. I am writing this review just so people like me, read here, never buy such modest batteries for their high-quality phones. Dear 10euro more and genuine. Request the natüüüüürlich alllleeees genuine batteries. Sigh. Should be the so sorry Nokia, then you have 4 years ago had a dream supplier, today nightmare suppliers. Anyway, I am dissatisfied. The battery is a disappointment and not worth the hassle to have been so. The smartphone generation looks probably different, because a full day is probably much ;-). Mir is too little. Greeting MS