Unknown sender text, what about Stagefright?

I use 8sms as my default text app. In the Google Messenger app I see a text of 829 bytes from an unknown sender yesterday which I have not downloaded. This text is not seen in my 8sms messaging app, nor is it seen in the mysms app. Is there any way to check this message outside of my phone? I don't want to open it given the circumstances, but I don't want to miss a legit text.

Picture messaging linked from sender.

My previous phone, Nexus 6, had this amazing feature which would string together all photos from each individual sender. Meaning that if you clicked on w photo, from stock messaging app, from a particular sender and wanted to see what other photos they've texted you, whether it was from the same day or a month ago, all you had to do was swipe to the left or right of the photo and it would automatically take you to every other photo that the sender texted you, without having to back out of said photo and go scrolling through all messages to find other photos.
Question is, is there anyway we can get that feature working on the G4? Or could someone point me in the right direction of how I could try to get this working on our G4's. Any help is much appreciated.
Thanks in advance everyone.


Sent from my LG-H811 using XDA Free mobile app

Picture messaging linked from sender.

My previous phone, Nexus 6, had this amazing feature which would string together all photos from each individual sender. Meaning that if you clicked on w photo, from stock messaging app, from a particular sender and wanted to see what other photos they've texted you, whether it was from the same day or a month ago, all you had to do was swipe to the left or right of the photo and it would automatically take you to every other photo that the sender texted you, without having to back out of said photo and go scrolling through all messages to find other photos.
Question is, is there anyway we can get that feature working on the G4? Or could someone point me in the right direction of how I could try to get this working on our G4's. Any help is much appreciated.
Thanks in advance everyone.

Sent from my LG-H811 using XDA Free mobile app