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

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 stick-on car mount

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Description

📡 Stay connected everywhere—don’t let weak signals slow you down!

ENHANCED CONNECTIVITY - Experience stronger bars and faster data on the road
OPTIMIZED SIGNAL RANGE - Max performance within 3 feet for crystal-clear reception
EFFORTLESS INSTALLATION - No drilling needed—stick it on and go!
SLEEK DISCREET DESIGN - Compact black antenna blends perfectly with your vehicle
UNIVERSAL COMPATIBILITY - Works seamlessly with iPhones, Galaxies, Pixels & more

The Cellet Cell Phone Signal Booster Antenna is a passive repeater designed for easy, no-drill installation on your vehicle’s rear window. Compatible with major carriers like Verizon, AT&T, and T-Mobile, it enhances 5G and 4G LTE reception for a wide range of smartphones including iPhones, Samsung Galaxies, and Pixels. Delivering improved call quality and faster data speeds within a 3-foot range, this sleek black antenna is the perfect upgrade for professionals who demand reliable connectivity on the move.

Specifications

ASIN	B07H9GTW3W
AntennaDescription	5G LTE 4G 3G 2G
Best Sellers Rank	#33,312 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #47 in Cell Phone Signal Boosters
Brand	Cellet
Color	Black
Customer Reviews	3.1 3.1 out of 5 stars (1,228)
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
UPC	800768714368
Unit Count	1 Count

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35974CFA

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In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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