One can also make a difference between how the message was send, in case the message appears in blue bubble then it means the message was send using the iMessage on the other hand if it appears in a green bubble which will indicate that text message was sent through cellular plan.

How to fix iMessage not working – iMessage has made communication much easier if one comes across a concern that sending message has failed then the best way to understand the concern is if iMessage is not working for one contact or if the issue is across.

One can take the steps as below to overcome the concern –

§ Turn iMessage off, and then try to turn on – to in act the same on has to go on settings look for the option of Message and in order to turn off the same click on the option next to Message and keep holding the same until you see the message Slide to Power Off and to turn off your phone slide the finger across the bar in order to initiate the iPhone or iPad to switch off after few seconds turn on your specific device and click on Setting look for the option of iMessage and turn on the same by doing the same one may be able to overcome some major concern

§ Ensure iMessage is setup correctly –initially click on Settings and look for the option of Messages you are required to open the menu which is Send &Receive and one will be able to see all the phone numbers and email address which have been configured in order to send receive the iMessages on the device. Under the option of Start New Conversations from and in case one cannot see the checkmark available next to the phone number and click on the phone number to activate the iMessage for your number

§ Check internet connection – as we all know that iMessage works with Wi-Fi or cellular date hence we have to ensure that it is working properly and one can also check the same by opening Safari and trying to open any website and if the same does not get loaded which means internet is not working properly and get sorted

§ Try to Sigh out iMessage and Sign back in-go on the settings and look for the option Message and clock on the option Send and Receive and then hit on Sigh out and to get back in enter the Apple ID and then try to send the message

§ Ensure that ios is updated – to check upon the same go to settings look for the option of General and then click on Software Update and do check if the phone needs any updating

In case if the problem still persists one also look for the option of Factory reset and please ensure that you know the Wi-Fi passwords and not only this even your iPhone’s Bluetooth and VPN settings will also rest to factory and then not to take a lot trouble one can also seek help from Apple Support hence the technicians will help you for the same.
Related Reads https://www.quickfixnumbr.com/imessage-not-working/