YOU SAID:
Do you used to call me on my cellphone
INTO JAPANESE
あなたは私の携帯電話で私に電話をかけていたのですか
BACK INTO ENGLISH
Did you call me on my mobile phone
INTO JAPANESE
あなたは私の携帯電話で私に電話をかけましたか
BACK INTO ENGLISH
Did you call me on my mobile phone
That didn't even make that much sense in English.