Great. Have you updated to iOS 10?

Well I don't own a SE so I'll let someone else fill you in on the performance before and after iOS 10. I have a 6S Plus and I would say that my phone feels faster after the OS update. Can't really comment on battery life just yet coz I only updated last night but so far, nothing abnormal.

Updating via iTunes is the safest bet but you'll need double the capacity, E.g. To update OTA I needed 1.2GB but if I do it via iTunes I would need 2.45GB.

A brick is what your phone becomes when it is rendered unusable by a software bug.

Moving to 7?

Nope. Not even close

Wow... you must be a really light user

Can share a screenshot of your battery usage?

Wow, you're a really light user. One thing about iPhones is that if you don't use it much then the standby time is truly outstanding even for a small battery capacity like that on the iPhone SE.

http://www.theinquirer.net/inquirer/review...phone-6s-review

For real world usage, I think the experience differs from user to user as well, so what may work for me or seems fast for me may not be for you. The fact is that the SE has the same internals as the 6S with a smaller screen and a smaller battery so performance wise, it should be same or better, logically speaking. More importantly, is which phone will be better suited to you based on your budget and preference (smaller or bigger screen and form factor, whether or not Force Touch is important, etc.).

Same here. My preference would be New > Used > Demo > Refurbished.

These days a lot of con artists out there. Dunno what parts they used when refurbishing

Nope. Used means you are buying directly from the previous owner. Refurbished means you could be buying from a reseller who accepted a trade-in unit or faulty unit and repaired it before reselling it.

You can check the phone's IMEI vs the IMEI on the box. Beyond that , I would think it's hard to judge

Dual sim is one feature I'm really hoping Apple will seriously look into for the next iPhone. Changeable batteries are rare these days even for Android and I never used the IR Blaster even when I had one during my Note 3 days. My major annoyance with iOS is the inability to attach files on the fly with the native email app. Makes work a bit harder.

No intentions to JB so I guess not an option for me. Oh well....

Excellent standby time

You skipped iOS 10 and 11?

Have you installed the latest iOS 11.3 and checked the battery health?

Can you connect it to iTunes and do a back up, reset and restore?

No, if you can successfully backup into iTunes then no worries about the data.

Did you backup the data, do a factory reset and restore? Battery draining fast shouldn’t be a reason for not being able to defect WiFi so yeah, it’s possible that it’s a hardware issue.