T-Mobile High-Speed Internet Gateway Operator 
Manual
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Issue: DRAFT Nokia 3TG-01275-AAAA-TCZZA 41
 
 Place the gateway:
• for best user experience, place the T-Mobile High-Speed Internet Gateway where 
the 5G signal is strongest.
• for convenience, choose the best location by moving your device using the 
internal battery.
• in a location with few Wi-Fi obstructions, ideally close to a window
• close to an AC socket (if not using the internal battery)
• on the side of the room closest to the base station (if known)
• on higher elevation or an upper floor of the home
• away from possible sources of interference, electronic devices, such as printers, 
microwave ovens, and so on
• away from metal fixtures, enclosures, cabinets, appliances, blinds, reinforced 
concrete, and pipes
• not in a location where radio signals might be weak, such as the basement
5.2 Product Warnings
Follow these guidelines when using the T-Mobile High-Speed Internet Gateway and 
its battery:
5.3 Connecting power
Connect the AC cable to the power supply, and then plug the other end of the AC 
cable into the electrical outlet.
Danger 1 —  Do not attempt to access, manipulate, insert 
foreign objects into, re-manufacture or change the device 
battery. Improper battery use may result in fire, explosion, or 
other hazard.
Danger 2 —  Do not immerse or expose the device battery to 
water or other liquids. Do not expose it to fire or other explosion 
hazards.
Danger 3 —  Do not attempt to charge the device outside of the 
device itself. Use of an unqualified charger may present a risk 
of fire, explosion, leakage, or other hazards.
Warning 1 —  If the gateway is dropped, especially on a hard 
surface, or in case of suspected damage, contact the T-Mobile 
service center for inspection.
Warning 2 —  Contact a T-Mobile service center to promptly 
dispose of used or ineffective batteries in accordance with local 
regulations.