Convert midi type 1 to type 0
Most of the midi files you find on the internet are known as type 1 midi files.
The midi type 1 to type 0 function allows you to convert any midi file into the type 0 midi file which is generally more compatible with mobile phones.
At the same time, the function will sort the midi events in order of time, eliminate track clashes and carefully merge tracks that share the same channel.
The instructions for your phone will tell you if you need to use the type 1 to type 0 converter with midi files for your handset.