Slow loading, dropped photo uploads, and freezing kiosks are often a network problem rather than a software one. Here's how to set it up right.
Required coverage
- Lobby: customer-facing kiosk, customer phones (for browsing), staff devices
- Front desk: laptop + receipt printer + maybe a tablet
- Each install bay: installer mobile devices, photo uploads in flight, sometimes a wall-mounted tablet
- Back office: management laptop, possibly a desktop, security system
- Outside (mobile if you have a driveway / detail bay): spotty fine for most, but matters if you do exterior work
Most shops underspec WiFi for the bay environment. A car blocks a lot of signal — coverage that works in an empty bay falls off when a vehicle is parked in it.
Mesh WiFi recommendation
Buy a mesh system. Single-node WiFi from your ISP-provided router will not cover a shop.
Good options:
- Ubiquiti UniFi (UniFi 6 Lite, UniFi 6 LR, UniFi 6 Enterprise) — best price/performance; some setup curve
- Eero Pro 6 — easiest setup; good performance; managed via app
- Netgear Orbi RBK853 — high performance; expensive
- TP-Link Deco X90 — budget option
Place nodes:
- One at front of shop (lobby/front desk)
- One per 2-3 bays
- One in back office
- One outside if exterior coverage matters
Budget: $400-1,200 for the mesh, depending on size.
VLAN segmentation
For shops over 5-10 employees, segment the network:
- VLAN 1: management + POS (laptops, payment terminals)
- VLAN 2: installer devices (iPads, phones running the installer app)
- VLAN 3: lobby kiosk
- VLAN 4: customer WiFi (public, isolated from business network)
- VLAN 5: IoT (security cameras, smart locks, signage displays)
This prevents:
- A customer's compromised device from reaching your POS
- A signage display's auto-update breaking your payment terminal
Requires a managed switch + mesh that supports VLANs (Ubiquiti excels here; Eero is harder).
Public WiFi for customers
Offer it. Customers expect it.
Best practices:
- Network name: clear (e.g. "YourShop Guest")
- No password OR posted password (don't make customers ask)
- Splash page (optional) for branding + acceptance of terms
- Bandwidth cap per device (don't let one customer stream 4K on your line)
- Auto-disconnect after 4 hours (frees up DHCP leases)
- Isolated from business network (VLAN — see above)
Installer device WiFi setup
Each installer device should:
- Auto-connect to the shop's installer WiFi (VLAN 2)
- Have data + WiFi both enabled (so if WiFi drops, cellular takes over for photo uploads)
- Not be on the public customer WiFi (different VLAN; faster + more secure)
Bandwidth + uplink
Minimum for a 4-bay shop: 200 Mbps down, 20 Mbps up.
The bottleneck is usually upload — photo uploads, video uploads. If you're shooting 4K install videos for marketing, 50 Mbps up minimum. Fiber if available.
When WiFi is flaky
Symptoms:
- Photo uploads stuck "pending"
- Kiosk freezing or rebooting
- POS lag on credit card processing
- Random sign-out from SalesThumb
Diagnosis:
- Run a speed test from the device showing the problem (not from your office laptop)
- Check mesh node placement — are you near a node?
- Check ISP uptime in the last 24 hours
- Restart the mesh and modem (literally power-cycle both, in order: modem first, mesh second)
For chronic issues:
- Call ISP — sometimes line quality is degraded and they'll repair
- Add a mesh node or upgrade the mesh
Backup uplink
For shops doing $5k+ revenue per day, an internet outage is real money. Consider:
- Cellular backup (Verizon JetPack, T-Mobile gateway, Starlink in remote areas)
- Auto-failover via a dual-WAN router so devices reconnect to the internet automatically when the primary line drops
SalesThumb has no general offline mode today — quoting, checkout, and most photo uploads need a live connection to save (the mobile inspection checklist autosaves locally as the one exception), so a backup uplink's job is keeping that connection up, not covering for an offline gap.
Budget: $50-150/month for backup cellular.