where do you mount the other part? I know to put the one one the roof

Exactly,Firechachi. The piece with the single, long, antenna goes outside. The othet piece goes directly over it (cover it) on inside of glass.

How close does phone need to be? Will it boost 25 feet from outside building to inside?

It doesn't boost the signal, it's a repeater for poor factory antennas and doesn't even do that! Not even the $300 ones give a bar where there isn't one and MIGHT be able to improve a bar where there is service already and is borderline! It needs to be within 2-3', 25' isn't possible without spending $400-$500. It's just something cheap and manages to sell countless numbers of them because people want better signal and think they can get it for $15.

I have service when I put my phone on the window. Will it help give me a signal in my room?

Maybe if you attach it in the window. I haven't had any luck with it. Tried it to boost signals for events that I do, and it did not work outside the car.

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Cell Phone Signal Booster Antenna for Verizon, AT&T, T-Mobile - Truck & Car Mount Passive Repeater for 5G, 4G LTE iPhones, Galaxies, Pixels

Product ID: 82491984

Details

Antenna
5G LTE 4G 3G
Brand
Cellet
Color
Black
Impedance
4 ohm
Manufacturer
Cellet
Maximum Range
3 feet

⚡Improves call & data speed

📶Boosts 5G/4G LTE signals

🚗Easy no-drill car mount

156.39 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📡 Elevate your ride’s signal game—because buffering is so last decade!

DRIVE WITH CONFIDENCE - Enhances voice clarity and data speeds so you stay productive and connected on the move.
MULTI DEVICE POWERHOUSE - Supports all latest iPhones, Samsung Galaxies, Pixels & more—never drop a call again.
PLUG PLAY SIGNAL SURGE - Stick-on installation with zero drilling—get connected in seconds!
OPTIMIZED VEHICLE PLACEMENT - Designed for rear window mounting within 3 feet for max signal amplification.
UNIVERSAL NETWORK COMPATIBILITY - Works seamlessly with Verizon, AT&T, T-Mobile & all major carriers on 5G/4G LTE.

The Cellet Cell Phone Signal Booster Antenna is a sleek, passive repeater designed for easy rear window mounting in cars and trucks. Compatible with all major US carriers and a wide range of smartphones including the latest iPhones, Samsung Galaxies, and Pixels, it boosts 5G and 4G LTE signals within a 3-foot range to improve call quality and data speeds without any drilling or complex setup.

Specifications

ASIN	B07H9GTW3W
AntennaDescription	5G LTE 4G 3G 2G
Best Sellers Rank	#33,944 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #52 in Cell Phone Signal Boosters
Brand	Cellet
Color	Black
Customer Reviews	3.0 3.0 out of 5 stars (1,230)
Impedance	4 ohm
Item Dimensions L x W x H	1.75"L x 1.75"W x 8.75"H
Item Type Name	Passive Antenna Repeater
Manufacturer	Cellet
Maximum Range	3 feet
Mfr Part Number	ACAR3A
Model Number	ACAR3A
Number of Channels	1
Number of Items	1
Number of Packs	1
UPC	800768714368
Unit Count	1 Count

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156.39 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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