how to increase upload file size in post

Perhaps this can help you or you can ask there https://una.io/page/view-discussion?id=989

below is the output of server audit. 

do i need to ask my service provider to increase this post max size ..

the value 8388608 is in byte i guess so mb will be 8 mb ..am i correct ..

so i can increase file size to max 8 mb .

correct me if i am wrong..

PHP:

• version = 5.6.40 - OK
• allow_url_fopen = On - OK
• allow_url_include = Off - OK
• magic_quotes_gpc = Off - OK
• memory_limit = 134217728 - OK
• post_max_size = 8388608 - OK
• upload_max_filesize = 2097152 - OK
• register_globals = Off - OK
• safe_mode = Off - OK
• disable_functions - OK
• php module: curl = curl - OK
• php module: gd = gd - OK
• php module: mbstring = mbstring - OK
• php module: json = json - OK
• php module: fileinfo = fileinfo - OK
• php module: zip = zip - OK
• php module: openssl = openssl - OK
• php module: exif = exif - OK