'Hit my phone up' used only by people called Justin Bieber in songs. It simply means 'hit me up' or even more simply 'call me' or 'text me on my mobile telephone' but that wouldn't cut it as a lyric in his song.

When u text some or call someone constantly

1) You are the reason my phone wake-up from sleep ( black screen brighten up).
2) Contact.
3) Still in contact.

it can also be translated as no other girl contact me or even though we are not a couple anymore but I ain't in love with anyone else and on your call my phone react the same as it used to be ( this situation is a part of moving on).

G-Way

calling someone who is no interested to answer your call

1. To call someone on their landline.

2. To vigorously hit someone with the handle of a landline phone.

3 . To insert a phone into ones anus and it repeatedly “butt dial” someone.

An arse splittingly wide shit, usually the result of stuffing yourself the day before with kebab, steak, fine cheeses, etc... and dehydration caused by excess alcohol.

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