A text message of up to 160 characters without an attached file is known as an SMS, while a text that includes a file—like a picture, video, emoji, or a website link—becomes an MMS.
SMS, or Short Message Service, is the technical term for text messaging, the most widely used data application in the world. SMS users can send messages between cell phones or from a computer to a cell phone.
Informational messages are also better sent via SMS because the text should be all you need, though if you have a promotional offer it may be better to consider an MMS message. These image messages are also better for lengthy messages as you won't be able to send more than 160 characters in an SMS.
This could be caused if there is no Internet connection. If the option to “Send as SMS” is turned off, the iMessage will not be delivered until the device is back online. You can force an undelivered iMessage to be sent as a regular text message regardless of the “Send as SMS” setting.
If there's an error message, it's likely the phone is disconnected. If the call goes through just fine; you've been blocked. The Read Receipts – This works for iPhones and newer Androids. Assuming the contact has read receipts turned on, you can easily determine if you've been blocked by the message receipts.
Your phone may not be on "Do Not Disturb," but that conversation is - it's a separate setting from your phone's "Do Not Disturb" setting. Just go into that conversation -> Details -> toggle the Do Not Disturb switch and you should have your notifications back.
How to Get Text Message History From Phone
Open the “Contacts” app and ensure the phone number is correct. Also try the phone number with or without the “1” before the area code. I have seen it both work and not work in either configuration. Personally, I just fixed a problem texting where the “1” was missing.
There are a number of reasons why an SMS message might not get delivered, but some of the most common are: the recipient opted out of messages, the recipient blocked your phone number, the message contained illegal content, or there were network problems with the recipient's carrier.
Why are my SMS texts not sending?
Dec 11, 2021
Type *#*#4636#*#*. Tap Phone information. Scroll down to SMSC. Tap Refresh to get the current number and the format it uses.
If an Android user has blocked you, Lavelle says, “your text messages will go through as usual; they just won't be delivered to the Android user.” It's the same as an iPhone, but without the “delivered” notification (or lack thereof) to clue you in.
If your iPhone is not sending messages, first make sure your phone has service, as the issue may be with the Wi-Fi or cellular network, not your device itself. Check in your iPhone's Settings app that various messaging options are turned on so that your phone can dispatch texts if iMessage fails.
If your iPhone messages are green, it means that they're being sent as SMS text messages rather than as iMessages, which appear in blue. iMessages only work between Apple users. You'll always see green when writing to Android users, or when you're not connected to the internet.
The green message background indicates the traditional SMS text message. It actually means a message that you have sent to someone else is through SMS message service instead of Apple iMessage.
Your “iPhone not alerting me of texts” issue may be caused by which there sets no sound for the notifications. To fix it, you should go to Settings > Messages > Sound and select the preferred notification sound. Besides, check if you have turned on “Allow Notifications” and the three options below “Alerts”.
"Notification" (the bell) allows you to turn notifications on and off for that contact. If you have notifications off, you will see the little bell with a line through it on the summary page where all your conversations are.
Go to Settings > Sounds & Haptics. Check the Ringer and Alerts slider. Try changing the sound pattern for the type of alert. Go to Settings > Notifications.