Insert SIM on your iPhone and open Settings > Messages > and turn iMessage off on your iPhone. It might turn out that you will need to deregister iMessage on the SIM before you can send messages using Samsung.
Have you recently moved to Android phone from iPhone? The Apple ecosystem uses iMessages but that won’t work on your Samsung phone, or any other Android for that matter. I use SMS Organizer instead because it is simply better than anything else I have ever tried so far.
You can also change the default messaging app option from Settings > Apps > Messages > Messaging app, and here you can choose Messages, which is from Samsung. You can switch to Samsung Messages right on the same screen by tapping on OK to confirm. Are you met with a notification that says your default messaging app is another? Sometimes, users don’t know that the messaging feature is part of the package. Which is your default messaging app, and how many have you installed? Some apps like Truecaller offer messaging features and will constantly show annoying pop-ups hoping you would switch. Eject your SIM card from the tray, wait for a few moments, and then reinsert it to check if this fixes the message error on your Samsung phone. I know this is old-school but it just might help. If that’s the case with your mobile service provider’s downtime status, then there’s very little you can do.
You can check downtime for several services at Down Detector. The carrier may be going through maintenance or some error leading to downtime and subsequent issues like Samsung messages not sending errors. Are people (maybe friends) in the same area with the same carrier getting good coverage? Can they send and receive messages? This will help your understand if the issue on your end (your location or phone) or the mobile carrier. You can use an app like Open Signal to find nearby towers and move closer to get a better signal. Network issues can cause all sorts of problems.
Text messages need a carrier signal to work normally.
Visit our developer page! We've created new custom SMS themes and many other personalization apps that work on Android phones! Choose the theme you like from all the free SMS themes or just try them all! SMS For Samsung Galaxy J2 is a beautiful free theme for text messages.At this point, it’s safe to assume that you’ve check whether your phone isn’t in the Airplane mode by mistake. Change the font for reading and writing text messages! This free messaging theme is one of the most amazing customization apps on the market and works with any Android version.
If you don't have GO SMS Pro or New Messenger Version 2017 installed on your Android phone or Android tablet, don't worry.
★ Notice ★ This free theme works with the GO SMS Pro or the New Messenger Version 2017 app.