Why Your Android Says Attachment Limit Reached (And How To Fix It) – SlashGear

A simple way to get around the file size restriction on Android is to enable Rich Communication Services (RCS). This form of Android messaging is the answer to the iPhone’s iMessage app. Instead of sending messages via SMS/MMS, RCS bypasses the device’s mobile provider by sending messages via Wi-Fi. However, older Android phones and devices with mobile carriers that don’t support RCS cannot use the feature. There are a limited number of texting apps that support RCS at the time of writing.

How to enable RCS in Google Messages:

1. Open the Google Messages app or download it from the Google Play Store if you do not have it.
2. Tap the user icon in the top right corner.
3. Select Messages Settings in the drop-down menu.
4. Tap the RCS Chats option, which is listed as Chat Features on some phones.
5. Toggle on the RCS Chats setting.

If you have a Galaxy smartphone, you can use RCS messaging in Samsung Messages instead, but it isn’t as straightforward. The carrier must support the app’s advanced messaging feature, which is what Samsung calls RCS. To check whether it’s enabled:

1. Open the Samsung Messages app.
2. Tap the three vertical dots.
3. Tap Settings.
4. Look for Chat Settings — if it is grayed out, that means your carrier doesn’t support the Samsung app’s RCS feature. If the feature isn’t grayed out, that means you can use RCS in Samsung Messages.

Activating RCS will allow you to send files up to 100 MB. However, for RCS to function, both you and the person you are messaging must have the feature enabled, and you may need to disable your phone’s built-in power-saving feature for it to work.