Help finding possible new phones?

My phone took an accidental dunk and I'm unsure if it'll survive. I might have to get a new phone. I don't want an Apple phone. And I've tried hard in the past to look for phones out of curiosity, but none of them fit what I needed.

I would like a phone that's still fairly small (my current one is the iPhone SE, 4 in. Screen, 4.87 in. Phone). I would like something as close to that as possible. My car doesn't have bluetooth and I still like the capability of charging and listening to music at the same time, so if it is a rare breed that still has a headphone jack, that'd be a blessing. I don't expect ppl to do the research for me, but if anyone already knows of some phones that fit the criteria I would be happy. I thought the Google pixel 1 would be a perfect fit, but Google doesn't sell it themselves anymore and I don't wanna buy from 3rd party.

Added (1). Also, can anyone answer honestly whether or not Bluetooth that's constantly on and connected (such as with headphones) drains battery life in a significant way?

How long should an iPhone 7 last?

I'm not talking about the batteries, because we had them replaced a couple months ago at an Apple store.

Here's the basic situation: I called Sprint yesterday to ask why our cell phone bill has been higher in the past two billing cycles. I assumed it was because a promotional discount hadn't yet kicked in for my oldest son's recent promotional upgrade (we have four lines in total).

Anyway, it turns out that the other three lines we have wrapped up the 18 month contract period and so the three IPhone 7s converted to rental units at $27.00 a phone. We can buy them out at $159 a pop ($477 total) or trade them in on a new 18 month contract for new IPhone 8s at around $10 dollars a month.

So the question we face is: Should we stick without old IPhone 7s or upgrade?

How durable and long lasting is an iPhone?

Added (1). ** "stick without old" should read "stick with our old…"

Iphone SE Wi-Fi issue?

IOS 12.1.4 , it connects to our home Wi-Fi but no internet and but other devices works perfectly. I went to APPLE store and restored as NEW it works perfectly for couple of days and then stops working.
the phone is OUR OF WARRANTY and issue can be reproduced.

is that a software or hardware issue? Apple suggests to replace if issue reoccurs but i have to pay for it
what is the apple responsibility since it is not customers fault?

How can I jailbreak my ios 12.1.4 Iphone?

I've looked online and have tried different sites. I have done all of the steps (installing the root exe and downloading the two various apps) but it is to no avail. Can it not be done?

Recommend ways to make Wi-Fi faster?

In the house we have at&t internet and my nefew (10yr old) who comes home from school at 2:45pm plays video games till 5-6pm and then again at 8-9pm till when ever he goes to sleep. I mean he is way to much into video games so much I have seen him all time playing video game on Nintendo switch and watching videos on YouTube at the same time. (Once he was on three electronics at one like wth). But anyways he takes up all the Wi-Fi and makes my phone slow for my internet (I have iPhone XR) what can I do to have better Wi-Fi?
Even if he is just on his xbox it takes up a lot of Wi-Fi.
And No it's not other ppl on there phone that makes are Wi-Fi slow just saying