hey , how did you restrict apps that boot during device bootup ? Does it required SDMaid Pro ? and is root required ?
yes and yes, ROOT with using SD Maid (I have Pro), so I am not 100% certain if BOOT / APP boot control is premium only or in the free version so test it and let me know. Once in SD Maid, go to app management, boot (see pic 1), and disable ALL apps you dont need. You would be VERY surprised how many apps start with boot (mainly GAMES and streaming services) so they can push you annoying game and app notifications. SCREW that, it does nothing but wastes battery, RAM, and annoys me the crap out of me so I block and disable them. Then, for things like the hidden Verizon tracking apps, I disable with IPChains so its firewall'd and dropped at the source and doesn't leave my device. Those apps (com.verizon.lkagent / com.verizon.obdm_permissions / com.verizon.mips.services AKA MY Verizon Services) start with boot and not only run in the background but collect device info and send to verizon, NO WAY that's happening! By firewalling those UUIDs, they cant reach the tracking services or verizon. Since they cant check in, they cant use RAM or battery or network (or at are using less resources than if allowed).
I do this on ALL ROMs I test and use (even stock), but you can also freeze those apps with TiB (if you have) but freezing disables the app as if its removed, whereas turning off the BOOT, disables the auto-start BUT doesn't freeze (disable) so its still usable on demand. I use all of the apps I disable on BOOT, and I have NEVER had an issue with disabling boot so I highly recommend reviewing boot apps. Just keep an eye out and watch for apps you need to receive notifications from (like XDA or Messenger, or Amazon/eBay), stuff like that. I do not disable those auto-starts as I DO want update notifications but only a VERY few apps get to send notifications for my droids's (email/work/XDA/TXT stuff like that) or can run.
I'm my last pic (I updated my post to show this piece), you'll see the verizon BULL SPIT services trying over and over to check-in but can't! This is WHY I firewall and DROP ALL verizon crap services so they can't track me. If you haven't seen or read what's being tracked, open the app data for my verizon and you will see literally everything about your device is sent to verizon without your permission. NOPE ain't happenin! They do not have my consent to know this type of information so to me, this is a clear sign of misconduct on their part but there's no way to stop it without firewall'ing the UUIDs (verizon services) or disable the apps and services all together. The problem with disabling them is WiFi calling is interrupted so I found it is better to simply drop the communication to their services then it is with disabling the apps.