[REPAIR] Need help identifying a part + soldering - Google Pixel 4 XL Questions & Answers

Hi,
I've a defective Google Pixel 4XL lying around I'd like to fix, however I can't figure out what what the part bordered in red is supposed to be. Anyone got a clue? I can't tell if it's a a capacitor or resistor and the value it's got. Tried to see if there are schematics for the motherboard, but so far no luck.
As for the part bordered in green: I know that's where the female connector for the battery (FPC) belongs. Would soldering it back with a good soldering iron be possible? Any clue where I can order these for cheap?
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5 MICRO USB & 3.5MM Headphone Protection Dust Port Plug Color Pack U Pick Set

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http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330736024507&var=540070314685#ht_1694wt_906
They finally got in clear, red and green colors in stock! $1.99 shipped overseas..
So pointless..
I see the use for phones or on devices where the ports are on top (for the rain and the like) but I don't really see a use for a tablet with the ports on the bottom.
Some people like to protect their ports. $2 shipped for 5... I just got some for my phone, but thought, hey why not use them on my N7 too getting 5 for the price of 1 set anyways..
To each their own. YMMV.
-CC

[WIP] Wireless Charging on IncS

I am planning to install wireless charging in IncS.
I would need some advice from experts in order to move forward.
On going through various forums on internet, i came across a small difference between the HTC Droid Incredible 2(Which supports wireless charging) and IncS.
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There are 4 small contact points on both the motherboards(Marked and circled in the pic). But on INcredible 2 there is a small plate soldered on those. Whereas, on INcS there is no such thing. I mean there is no way a Qi compatible charger receiver can touch the motherboard.
My question now is that should I get this thing soldered on IncS motherboard or do I need to do something else also?

An Overlooked Useful Tool

Magnetic Project Mat
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A great tool that I don't see a lot of people use is the magnetic placemat. If you're unfamiliar with what this is, it's a magnetic placemat. Uh... I guess that's pretty self explanatory. You can pick one up for only $20 from ifixit and you'll never have to worry about screws going missing again.
I've used one of these in the past and it really does make disassembly much easier. You don't realize how much time you spend fumbling around with screws until you use one of these.
Buy the Magnetic Project Mat

What is this dark rectangle on back of Q6?

I picked up a Q6 finding the back plastic cover has this rectangular cutout. You can't see it in the photo, as I need to catch the light at the correct angle to see it, but the phone has a darker rectanglular area to match. It seems to be more under/in the plastic than on top of it. I haven't opened it up yet to see.
My initial guess is that it was an area marked out to mount something but, I don't know, that just seems like going to too much trouble?
Does anyone know what this is?
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That's where the IMEI/barcode label is located on the back of the phone.

What are these little speakers called?

Trying to find some surplus ones for use in small laptops. These are Motorola phones.
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https://imgur.com/a/6VVY7yG
I thought the image went in the first post but this is a valid link to it on Imgur.
I think the metal bar is the speaker cone and it's mounted on something rubber/plastic that flexes. There could be a voice coil type thing in there or it could be piezo- electric like those annoying little beepers.
Those look like blocked. Are you sure are not fake?
I don't think so. Most cell phones seem to have them, some have tiny holes in them.
I suppose I could try a stethoscope on them, or make something like it with a microphone and headphones. By a weird fluke I have a real medical stethoscope in the other room. Mechanics use them too.

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