iPhone 6 flashes silent/ring mode-stuck in silent?

Thanks...as I said I’ve checked buttons on side of phone as well as iPhone settings and “do not disturb” in all locations to no avail. I truly think it’s a software/firmware prob. I’ve seen other complaints with iPhone 6 since the summer 2017 iOS upgrade...when I recently upgrade to 11.3.1 I thought it was fixed. It worked and then bam ringer/silent started flashing like crazy (see pic below) n ringer stopped. But it does work if I emergency bypass a contact. That’s what makes me think it’s not my button(s) or a setting bc it WILL ring in bypass mode-bizarre!!?? Alarm rings too.

Why are you suggesting download manual from iBooks? I don’t understand? What do you think would b helpful?

Thanks in advance and thanks for suggestions!

Thanks! I do believe the button is operational. When I flip, it responds as it should - it just goes immediately into silent mode. It will not come out of silent mode unless I do an emergency bypass in telephone contact. Then it rings perfectly!

The switch immediately goes to ringer/silent when I flip it. The only time I’ve been able to get it to audibly ring is after the last iOS update and if I hard reset (home+power) at least 10 times or more in a row. Then it comes back for a short time (hours) if I’m lucky. Then back to same issue :((

Sounds like software, yes?? FYI it hasn’t been dropped or gotten wet or anything else that I could attribute this to - it was intermittent at first and then just stopped ringing :(((

Anyone from Apple out there?

I appreciate your suggestion and comments. Let me clarify. The prob was intially intermittent; meaning I was able to fix by restarting phone, or hard re boot - nothing with the hardware or switch. I realize you believe it’s the switch but I really don’t think so...then an iOS updates ran while in hospital early fall-ish...then it stopped completely. I was quite ill so I could b wrong about exactly when and def which iOS it was.

I

was hopeful someone from Apple might chime in as they have in past. I do realize this is a users forum.

I have spent a considerable amount of time researching this matter before posting here. I have seen some users have a hardware switch prob and/or do not disturb setting issue. That’s def not going on for me. I have also seen many complaints similar to mine, if not exact. I have not seen a resolve other than what you’ve suggested... I’ve tried to no avail.

But none of the things relative to hardware or settings r happening for me. It will ring with switch in place if I over ride the contact in settings with ‘emergency bypass’. The alarm will also bypass and ring without touching switch. That tells me it’s not the switch/ringer/hardware, it’s software - do u agree?

Okey dokey. So noted. I cannot get to store w wheelchair n all...I suppose a call to Apple is in order then! Thanks for input :)) Have a nice day!