Should I look into a new phone?

[Cam Sturbaum]

I have a 3 year old Droid Turbo and several times a day it will vibrate once, very briefly, but there's either no notification or the notification banner flashes for less than a second and disappears. Any ideas as to what's going on? This only started a few days ago. Should I get a new phone or bring it in?
EDIT: I'm still running on lollipop/Software version 5.1 and when I go to check for an update it says I'm up to date, even thought I should probably be on Marshmallow by now.

 

[PowrDroid]

Did you install any new apps recently? It could be the new app's notification is set to "on" by default.

 

[Cajun_Mike]

You don't have a three year old Droid Turbo. The phone went on sale in late summer, early fall 2014.

 

[1Coopgt]

When was the last time you cleared the cache on the phone ?

 

[doogald]

EDIT: I'm still running on lollipop/Software version 5.1 and when I go to check for an update it says I'm up to date, even thought I should probably be on Marshmallow by now.

Though that sounds right - it should be running Marshmallow by now - Lenovo and Verizon still haven't updated the phone. You're on the latest update.

 

[drewlap2]

Honestly, yes. Motorola has ended support of the Turbo in terms of software updates. Kinda sucks considering the galaxy s5 is still supported.