MMY download size check: the exact byte count

20,954,528 bytes is the exact size of the channel file. Everything else on this page is about reading that number off your own copy.

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Why the rounded figure misleads

19.98 MB is 20,954,528 bytes divided by 1,048,576 and rounded to two decimals. A file manager that shows a whole number of megabytes collapses everything near 20 MB into one figure, which covers a truncated download and the genuine file equally well. The rounded figure cannot separate them. Ask for bytes.

Why a truncated file parses as corrupt

An APK is a zip archive with a table of contents at the end. A download that stops early keeps the start of the archive and loses the table, so the installer reports a parse error instead of saying the file is short. The error message points at the file being damaged when the real fault is the transfer. Checking the byte count before opening the file catches this in one comparison.

The round-number red flag

A file that lands at exactly 20,971,520 bytes, or any other clean multiple of a megabyte, was almost certainly capped by a download limit or a disk quota rather than finished. The genuine file ends at 20,954,528, which is not a round number in any unit. Treat a suspiciously tidy size as unfinished and download again.

Reading the byte count

macOS

Select the file in Finder, press Command-I, and read the figure in brackets beside the rounded size. That bracketed figure is the byte count. The rounded one is not. Terminal prints the same number alone: run stat with the -f flag and the percent-z format, then the file path.

Windows

Right-click the file, choose Properties, and read Size rather than Size on disk. Size on disk counts allocated blocks and runs larger than the file. In Command Prompt, dir prints the byte count in the column before the file name.

Linux

Linux prints it the same way: stat with the -c flag and the percent-s format, then the file path. ls -l prints the byte count as the fifth column, with no format string needed.

Android

The stock Files app shows a rounded size. A long press, then Details or Properties, usually reveals the byte count underneath. If it does not, a file manager that shows a checksum will show the byte count on the same screen, which lets you check size and hash together.

The other measured size

21,049,457 bytes is the second file, mmy.apk, measured the same day. If that is the number you see, you do not have a corrupted channel file; you have the other file, and its hash is on the second file page. The gap between the two is 94,929 bytes.

Any size below 20,954,528 is a cut-off transfer. Delete it and download again, on Wi-Fi if the first attempt was on mobile data. Any size above 21,049,457 was not measured here at all.