where i can see the imei number in my android phone

 You can see the IMEI number on your Android phone using the fast code method, the settings menu, or the original box. The three easiest ways are dialing *#06#, checking your phone settings, or looking at the retail box.

how do i identify big files in my onedrive ~~~~~ now ms suddenly cut off storage allowance for developer E5

 how do i identify big files in my onedrive

Using the OneDrive Website

Go to the OneDrive Website and log in.
Look at the bottom left corner of the page to see your total storage used.
Click on that storage amount or go to Settings (gear icon) > Options > Storage summary / What's taking up space to view a direct list of your largest files.
Alternatively, go to My files, click the column header for sorting, and choose Size (from largest to smallest). [1, 2, 3, 4, 5]

Using File Explorer on Windows

Open File Explorer and click your OneDrive folder on the left side.
Click into the top right search box.
Type size:>100MB (or change it to size:>1GB for even bigger files) and press Enter.
Sort the results by size to see what takes up the most room.