T-Mobile 5G Gateway G5AR (Arcadyan)
The G5AR is the game-changing T-Mobile gateway — the first one with actual external antenna ports. If you get one (or can request one via T-Mobile support), you can plug in a proper 4x4 MIMO panel antenna like the Waveform MIMO or Poynting XPOL-2 without needing to switch to an unlocked modem.
How to request one: existing customers can chat with T-Mobile support and ask for a “gateway upgrade” — success rate varies, but framing it as a signal problem improves odds. Some regional stores will do an in-person swap.
The antenna port situation: ports are hidden behind a rear panel that’s technically not user-serviceable. Removing the panel is straightforward (four screws, one plastic clip) and exposes two TS-9 connectors. Cables and adapters from any 4x4 MIMO antenna will plug in directly.
Carrier aggregation: this is the first gateway that reliably aggregates n41 + n25 simultaneously, enabling gigabit-class downlink in best-signal conditions. Real-world speeds routinely hit 400-800 Mbps in n41 zones.
This is the gateway you want if you’re on T-Mobile and care about performance. Swap up to it if you have anything older.
- First T-Mobile gateway with external antenna ports (TS-9 connectors, hidden under rear panel)
- WiFi 6E tri-band — significantly faster short-range than G4AR/G4SE
- Gigabit+ downlink capability with CA (carrier aggregation) of n41 + n25
- Significantly better thermal management — runs cooler under load
- Included free on current T-Mobile Home Internet signups
- External antenna ports are officially 'not supported' by T-Mobile — use voids ease of support
- Admin UI heavily locked down — signal metrics require special URLs
- Not all new customers get it — T-Mobile still ships G4AR/G4SE in some regions