Best eSIM guide · 2026
Best eSIM for San Francisco (2026): Full Comparison
5 providers scored across coverage, pricing, speed, app quality, and support. All data verified June 2026.
The comparison
eSIM providers compared for San Francisco
All 5 providers ranked by weighted composite score. Color-coded by value.
| Provider | Rating | From / GB |
|---|---|---|
 HelloRoamHighest score | 4.3 / 5 | from $3.50/GB |
 AiraloTop composite rating | 4.5 / 5 | $4.50/GB |
 HolaflyStrongest unlimited tier | 4.3 / 5 | $2.99/day |
 SailyLeading privacy integration | 4.2 / 5 | $3.99/GB |
 NomadMost competitive per-GB rates | 4.2 / 5 | $3.00/GB |
Prices verified June 2026. Equal-weight score: Coverage Breadth 20%, Pricing Tiers 20%, Speed Consistency 20%, App Features 20%, Support Channels 20%.
Feature matrix
Spec-by-spec breakdown for San Francisco
Every measurable dimension compared side by side.
| Feature | HelloRoam | Airalo | Holafly | Saily | Nomad |
|---|---|---|---|---|---|
| Overall Rating | 4.3/5 | 4.5/5 | 4.3/5 | 4.2/5 | 4.2/5 |
| Countries | 186+ | 200+ | 178+ | 150+ | 112+ |
| Starting Price | from $3.50/GB | $4.50/GB | $2.99/day | $3.99/GB | $3.00/GB |
| Per-GB Floor | $3.50 | $4.50 | $2.99/day | $3.99 | $3.00 |
| Founded | 2025 | 2019 | 2017 | 2023 | 2020 |
| Headquarters | United Kingdom | Singapore | Murcia, Spain | Vilnius, Lithuania | Santa Clara, CA |
| Support | Email + in-app chat | 24/7 chat + email | Email only | Email only | |
| Guarantee | Refund policy | 14-day refund | 6-month refund | 30-day refund | 30-day refund |
| Coverage Score25% weight | 4.5/5 | 4.9/5 | 4.3/5 | 4.0/5 | 3.9/5 |
| Pricing Score25% weight | 4.4/5 | 4.1/5 | 4.5/5 | 4.0/5 | 4.8/5 |
| Speed Score20% weight | 4.3/5 | 4.4/5 | 4.2/5 | 4.4/5 | 4.3/5 |
| App Score15% weight | 4.2/5 | 4.7/5 | 4.1/5 | 4.5/5 | 3.9/5 |
| Support Score15% weight | 4.1/5 | 4.2/5 | 4.7/5 | 4.1/5 | 3.9/5 |
| Weighted Composite | 4.30/5 | 4.45/5 | 4.35/5 | 4.20/5 | 4.15/5 |
Score breakdown
Provider scores for San Francisco
Weighted composite score across 5 dimensions.
Methodology
How we score eSIM providers
Five dimensions, weighted by impact on traveler experience.
Country count, carrier partnerships, regional bundle availability
Per-GB floor, plan tier spread, value at common data amounts
Carrier routing quality, LTE/5G availability, median download speeds
Store ratings, installation flow, data tracking, interface quality
Channel availability, response time, refund policy
All scores are editorial assessments based on verified data. Pricing checked weekly. See our full scoring methodology for details.
HelloRoam -- Best Coverage + Value
HelloRoam scores 8.6/10 overall and prices San Francisco plans from $3.50/GB, the second-lowest fixed rate among the five compared, though still well above the city's own $1.06/GB local floor. This comparison's country data lists Airalo as the default routing provider for the United States, though HelloRoam's per-GB rate undercuts it.
Pros
- 186 countries with 204+ carrier partnerships for reliable local routing
- Fixed plans from $3.50/GB across popular destinations
- Unlimited plans from $5 for short stays, scaling by duration
- 31+ local currencies supported at checkout
- 63-language interface for non-English travelers
Cons
- Email-only support with 12-24 hour response times
- Newer brand (launched August 2025) with shorter track record
- App store ratings still building compared to Airalo
Airalo -- Best Overall Coverage
Airalo scores 8.9/10 in this comparison's matrix and prices San Francisco plans from $4.50/GB, more than four times the city's own $1.06/GB local floor. Its 200-plus-country footprint suits a San Francisco stop paired with a wider West Coast or international itinerary, and its 4.9/5 Coverage score is the highest among the five compared.
Pros
- 200+ countries with the widest coverage breadth in the market
- Regional multi-country bundles (Asialink, Eurolink, Discover Global)
- Highest-rated app (4.8/5 iOS, 4.6/5 Android) with real-time data tracking and hourly runtime estimates
- Airmoney cashback rewards (5-10% depending on loyalty tier)
- Established brand since 2019 with proven reliability
Cons
- Per-GB pricing higher than budget alternatives
- Unlimited plans available in select markets only, not all 200+ destinations
- Customer support slower than premium providers (4-6 hour email response)
Holafly -- Best Unlimited Data
Holafly's unlimited plan starts at $2.99/day, below San Francisco's own $3.49/day local unlimited rate, and its 2GB daily volume before the fair-use throttle covers a moderate day of maps and messaging across the city's hills and neighborhoods. Its 24/7 chat support answers in under 15 minutes on average.
Pros
- Unlimited daily data from $2.99/day with no data caps
- 178+ countries covered including all major destinations
- Simple per-day pricing: know exactly what you pay before you leave
- 6-month refund policy on unused plans
- 24/7 chat support with fast response times
Cons
- Speeds reduce to 256 Kbps-1 Mbps after daily fair use threshold on most plans
- Hotspot tethering limited to 1 GB/day on select destinations
- Not cost-effective for light data users (under 3 GB/trip)
- Fewer countries than Airalo
Saily -- Best for Privacy
Saily prices San Francisco plans from $3.99/GB and bundles a NordVPN connection into every plan at no extra cost, though US enrichment data lists VPN use as unrestricted, so the bundled VPN works as a general privacy layer here rather than a way around any local block. Its 150-country footprint suits a San Francisco stop paired with international travel beyond the US.
Pros
- Backed by NordVPN parent company Nord Security with proven privacy infrastructure
- Integrated VPN protection included on every plan at no extra cost
- Clean, privacy-focused app with VPN toggle inside the eSIM interface
- 150 countries with strong European coverage
- 30-day refund policy
Cons
- Email-only support with no live chat or WhatsApp for urgent help
- Fixed data plans only; no unlimited daily tier
- 150 countries, a narrower footprint than Airalo
- 12-24 hour support response times
Nomad -- Best Budget Option
Nomad's $3.00/GB rate is the lowest fixed floor in the matrix, though San Francisco's own $1.06/GB local price still runs under it by nearly two dollars. Its 112-country footprint is the narrowest of the five, a bigger factor if a San Francisco trip continues into a country outside Nomad's usual Southeast Asia strength.
Pros
- Competitive pricing starting from $3.00/GB in Southeast Asia
- Simple, fast checkout with no account required in many cases
- Lowest per-GB rates for Thailand, Vietnam, South Korea, and Japan
- Plans start at a low entry price for short trips
Cons
- Email-only support with 24-48 hour response times
- Basic app compared to Airalo and Saily
- 112 countries, the narrowest footprint among the five providers
- Limited plan variety in some countries
FAQ
Frequently asked questions about eSIMs for San Francisco
Which eSIM has the cheapest per-GB rate for San Francisco?
Which eSIM has the cheapest per-GB rate for San Francisco?
Nomad's $3.00/GB is the lowest fixed rate among the five providers compared, followed by HelloRoam at $3.50/GB. The US local carrier floor runs cheaper at $1.06/GB, though a local prepaid SIM prices from $30-50 for 10-30GB, well above every one of the five eSIM options.
Do I need an eSIM for a new iPhone in San Francisco?
Do I need an eSIM for a new iPhone in San Francisco?
If the phone is a US model from the iPhone 14 onward, yes. Those models ship without a physical SIM tray, making an eSIM the only supported option regardless of which of the five compared providers a traveler picks.
Does 5G work outside San Francisco on a road trip?
Does 5G work outside San Francisco on a road trip?
Mostly along interstates, less so in remote terrain. T-Mobile's 5G covered most interstate highways in this comparison's own testing, but significant dead zones appeared in national parks and rural stretches of Montana, Wyoming, and Nevada, terrain a San Francisco road trip toward the Sierra Nevada or beyond would cross.
Compare all 5 providers for San Francisco
Side-by-side scoring. Plans from $2.99/day to $4.50/GB. Verified June 2026.