YOU SAID:
I have lost my iPhone
INTO JAPANESE
iPhoneを紛失してしまいました
BACK INTO ENGLISH
I lost my iPhone
INTO JAPANESE
iPhoneを紛失しました
BACK INTO ENGLISH
i lost my iphone
INTO JAPANESE
私は私のiPhoneを失いました
BACK INTO ENGLISH
i lost my iphone
Come on, you can do better than that.