That onces was my ever thirdclass phone because that phone are bad. some times its work some times it not work . some time phone hang thatway more problems with me thats phone. And there are most literally problem that are not an 4g phone and thatway I not to use 4g sim in samsung s3 phone . I dont like that phone thatsway I want to buy a new phone and I am very disappointed to samsung becuse that was samly phone to users . I advise that plz upgrade to 4g not in it but also all the phones . Okkk