Hello.Sorry for writing in English but i don't know German.I have an air phone 4 (clone of iphone 4)from China.Today suddenly it appears this problem.I cannot hear from the speaker while somebody calling me.I can hear from the loud speaker and also hear with earphones.So I would like to ask if i can flash it in order to maybe fix the problem.I allready try to restore in factory setting but nothing happened.I download a Mtk media editor but i don't know if this could help me.I would also like to know if i can put android at this phone.Thank you in advance.Joanna 
