Go to Optimizer > Blocked to find the blocked messages.

It is recommended that you uninstall these apps. Some phone management apps may block certain SMS messages for security purposes.

Check whether you are using a third-party phone management app to block messages.

For example, go to Optimizer > Blocked > Message block rules > Block unknown numbers. If so, turn off the Block unknown numbers switch.

Go to Blocked in Optimizer/ Tablet Manager, and check whether Block unknown numbers has been enabled.

Go to Optimizer/ Tablet Manager > Blocked > Block rules > Blocklist, and remove the required contacts from Blocklist. Go to Blocked in Optimizer/ Tablet Manager, and check whether the contacts have been added to Blocklist.

Select the contacts and follow the onscreen instructions to move them.

In PrivateSpace, go to Settings > Security & privacy > PrivateSpace, and touch PrivateSpace to MainSpace.

If there is a reply, move the required Contacts to MainSpace and try again.

Open Settings, search for and access PrivateSpace, and open Messaging. Check whether the numbers have been saved to PrivateSpace.The phone/tablet does not receive SMS messages from some numbers.

Unable to receive some of the SMS messages

Messages lite