Location: As far as I know, messages are sent with location data unless not given the permission to access that information.Īs for some of the other permissions, they appear to be things that help with how they send data across. Wi-Fi is probably used to help identify if the phone is Wi-Fi connected or not for transmitting messages.Ĭalendar: This is probably used to help with setting calendar events when messages containing date information are received. SMS and Phone for the actual transmission of SMS. P/M/F, Storage, Camera, Microphone are used for sending media, files, or taking media to send. Contacts helps for sender/receiver identity. All of these are pretty much essential for running the basics of SMS messaging with few exceptions. Identity, Contacts, SMS, Phone, Photo/Media/Files, Storage, Camera, Microphone, Wi-Fi.

They use alternative means or do not do anything because of that. It may not be necessary for that API to be used, which is why apps still function if they lack permissions. There are certain APIs that they need to utilize in part of the code, which requires the permission to be granted.

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