Passive voice問題

I think this sentece could have two answers:

My mobile had be stolen, so I couldn't contact you. (Because the mobile was stolen before the movement that u couldn't contact him.)
My mobile was stolen, so i couldn't contact you. (I assume that the mobile was the stolen by the time 'I' tried to contact 'u')
Another way is: I couldn't contact u because my mobile was/had been stolen.

my mobile was stolen/ had been stolen, so I couldn’t contact you.
有2個答案(past tense/ past perfect tense)


因動作已完全,不能用進行式 was being stolen
had be stolen(Grammar 錯)

my mobile was being stolen, so, I could not contact you. I guess you have to be consistent with the use fo tense

偷左, 是過去

應用was

唔係 is