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Tuesday, July 14, 2026

How to Use the UniFi 5G Max or 5G Backup for Load Balancing or as a Primary WAN

By default, the UniFi 5G Max/Backup is configured as a failover WAN. To use it simultaneously with your primary ISP for load balancing or as a primary connection, follow these steps:

To use your UniFi 5G Max or UniFi 5G Backup as a primary WAN or in load-balancing mode:

  1. Go to Settings → Internet and enable Load Balancing.
  2. Set Load Balanced WANs to 2.
  3. In the WAN priority list, drag WAN3 above WAN2 so that WAN1 and WAN3 are both assigned the Load Balanced role. WAN2 will automatically become the Backup WAN.
  4. Adjust the load-balancing percentages as desired (50/50 by default).
  5. Pro-tip: I suggest setting the 5G percentage to a lower value like 10% to prevent overload. T-Mobile throttles YouTube and you may notice slower loading.

In the screenshot:

  • WAN1 = Spectrum
  • WAN3 = UniFi 5G Max (T-Mobile)

The red arrows show where WAN3 should be moved.

If you're looking for an inexpensive T-Mobile-compatible data plan for the UniFi 5G Max or 5G Backup, consider Computers4People. Their annual plan works out to about $13/month, making it a low-cost option for a backup or secondary WAN.

Referral link:
https://www.computers4people.org/shield?ref=2432389000021896724&coupon=REFERRAL5

Note: The UniFi 5G Max and UniFi 5G Backup support AT&T and T-Mobile data-only SIMs.

Swap the 5G Max or 5G Backup


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How to Use the UniFi 5G Max or 5G Backup for Load Balancing or as a Primary WAN

By default, the UniFi 5G Max/Backup is configured as a failover WAN. To use it simultaneously with your primary ISP for load balancing or a...