Hotspot from a travel eSIM is a small feature with outsized importance — once you've relied on it for a work Zoom call from a cafe or to get a tablet online for a kid on a long transit day, you want to know it'll actually be there. Here's how it works, which plans support it, and when to pick something different.
Does my travel eSIM allow hotspot?
Check the provider's plan description. Most travel eSIM providers allow hotspot by default on most plans, but three patterns exist:
Unrestricted hotspot: the plan's data pool is shared between phone and tethered devices equally, no cap on hotspot specifically. Standard on most plans from most major providers.
Hotspot-capped unlimited plans: the plan offers unlimited phone data but caps hotspot at a fixed amount (commonly 5 GB, 10 GB, or 15 GB at full speed, then throttled). This is the most common structure for unlimited tier plans.
No hotspot on starter plans: some cheap 1 GB or 3 GB starter plans disable hotspot entirely to push heavier users toward larger plans. Less common but worth checking.
The FAQ on the provider's site or plan description usually says explicitly. If it doesn't, assume unrestricted — that's the default on most travel eSIMs today.
How to turn hotspot on
iPhone: Settings → Personal Hotspot → Allow Others to Join → on. Note the Wi-Fi password (you can change it). Other devices connect by picking your phone's name from their Wi-Fi list and entering the password.
Android (Samsung): Settings → Connections → Mobile Hotspot and Tethering → Mobile Hotspot → on. Configure password and Wi-Fi name under Configure.
Android (Pixel): Settings → Network & internet → Hotspot & tethering → Wi-Fi hotspot → on.
Android (OnePlus, Xiaomi, etc.): similar path, usually under Settings → Network or Settings → Wi-Fi. Search "hotspot" in Settings if you can't find it.
After enabling, the other device just joins like any Wi-Fi network.
Speed reality
Hotspot speeds are typically 50-70% of what the phone gets directly.
On a 4G connection: phone might see 50-80 Mbps direct; connected laptop sees 25-50 Mbps hotspot.
On 5G: phone might see 200-500 Mbps direct; connected laptop sees 100-300 Mbps hotspot.
Good enough for: email, video calls, web work, social media, streaming video at HD quality. Marginal for: large file uploads, 4K streaming, real-time collaboration on big files.
The bottleneck on most hotspot setups isn't the cellular network — it's the phone's Wi-Fi radio trying to serve multiple devices while also maintaining its own cellular connection.
Battery impact
Phones running hotspot drain fast. A phone that normally lasts 10 hours drops to 4-5 on continuous hotspot use. Two reasons:
- The phone runs both cellular and Wi-Fi radios simultaneously.
- The CPU is busier routing traffic between them.
For any hotspot session over an hour, plug the phone in or keep a power bank ready. For all-day hotspot use (working from a cafe all afternoon), keep the phone on its charger continuously.
Data drain
Devices connected to the hotspot use the phone's data plan, not their own. A laptop streaming Netflix at HD uses 3 GB/hour from your travel eSIM's balance.
This is the single most-underestimated factor in hotspot planning. A 5 GB travel eSIM that would have lasted a week of phone use can evaporate in an afternoon of laptop tethering with Slack, Zoom, and a video call or two.
Before tethering heavy devices, check your plan's remaining balance. If you'll regularly tether a work laptop, buy the larger plan size — 10-20 GB rather than 3-5 GB.
When to use phone hotspot vs a dedicated device
Phone hotspot is fine for:
- Occasional airport / cafe laptop connectivity (1-3 hours)
- Getting a tablet online for kids on transit days
- Sharing with a travel partner whose phone lost signal
- Emergency backup connectivity
Dedicated mobile hotspot is better for:
- Daily work-from-travel with a laptop
- Team travel where multiple people connect to the same network
- Long transit days with multiple devices
- Any scenario where the phone needs to stay on its own battery for other uses
Popular dedicated devices: Netgear Nighthawk M6 (5G, high-end), TP-Link M7 series (4G, mid-range), GlocalMe G4 Pro (global, with built-in data), Skyroam Solis 5G.
Hotspot on unlimited plans
Unlimited travel eSIM plans are the one place the hotspot-cap matters most.
Typical structure: "unlimited data at full speed" for the phone, but hotspot limited to X GB at full speed with throttled hotspot after the cap. Common caps: 5 GB, 10 GB, 15 GB.
For work travel where you'll tether heavily, check the hotspot cap, not just the phone data. A plan that's unlimited for the phone but caps hotspot at 5 GB effectively gives you a 5 GB plan for laptop use.
Hotspot and Data Roaming
Same data-roaming rules apply. For hotspot to work, the travel eSIM line must have Data Roaming on (since your phone classifies international data as roaming).
If the phone's cellular works but hotspot doesn't: check hotspot is enabled, check plan allows hotspot, check the connected device's Wi-Fi is actually connecting to your phone's network (not defaulting to a public Wi-Fi network nearby).
Testing hotspot before the trip
Don't find out your plan blocks hotspot on the day you need it. A week before travel:
- Buy the travel eSIM and install it.
- Activate temporarily by temporarily enabling Data Roaming on the travel eSIM line (no cost if you're not in the covered country — the line just stays inactive).
- Alternative: wait until arrival and test on day one.
For work-critical travel, don't leave hotspot testing until the day of the meeting. Either test ahead or have a backup plan (airport lounge Wi-Fi, coffee shop Wi-Fi as fallback).
Security
Phone hotspot uses WPA2/WPA3 encryption and requires a password for connecting devices. More secure than most open public Wi-Fi.
The data itself, once it leaves your phone, travels the cellular network like any other traffic — same security as direct phone use. For sensitive work, add a VPN on the connected device.
For quick reference: hotspot from a travel eSIM works on most plans, speeds are usable though slower than direct, battery impact is significant, and data drain from tethered devices can be heavier than you expect. Size the plan accordingly. 99esim's plans include hotspot support on most tiers — confirm on the specific plan if laptop tethering is a big part of your trip.