US Mobile Network Switcher: Warp vs Dark Star vs Light Speed

US Mobile Warp vs Dark Star is the comparison most shoppers start with, but the real decision is three-way: Warp (Verizon), Dark Star (AT&T), and Light Speed (T‑Mobile) are three independent radio grids under one bill. As of June 25, 2026, US Mobile publishes a per-host QCI (Quality of Service Class Identifier) map—Light Speed seats every plan on QCI 7, while Warp and Dark Star put Unlimited Premium on QCI 8 and Unlimited Starter on QCI 9—plus separate usage-policy language that can slow some Starter combinations after heavy months even when towers are quiet. Teleport (Switch Network) moves your line between hosts; when provisioning completes, QCI, PLMN, and public IP all follow the destination network, not the label you had yesterday.

Stat: US Mobile’s own QCI article states QCI 8 on Warp or Dark Star will usually outperform QCI 7 on Light Speed during busy hours—because the network matters as much as the number. Source: US Mobile — What is QCI?, accessed June 25, 2026.

---

Original research: three-network shopper score matrix

We compiled the matrix below on June 25, 2026 to give US Mobile network switcher shoppers a single citable cut—not a replacement for drive-testing your zip code. Methodology: We weighted five factors (coverage fit, published QCI tier, Starter usage-policy friendliness, Teleport/Multi-Network flexibility, and hotspot/roaming bundle depth) using US Mobile’s published QCI map, unlimited FAQ copy, and Switch Network help. Scores are 1–5 editorial weights, normalized per factor, then summed. We cross-checked plan footnotes on usmobile.com/plans and the QCI explainer the same day.

Factor (weight)	Warp (Verizon)	Dark Star (AT&T)	Light Speed (T‑Mobile)	Source basis
Rural / highway coverage (25%)	5	3	2	Host footprint; Opensignal/RootMetrics public summaries
Urban mid-band throughput (20%)	3	3	5	T‑Mobile n41 density advantage in metros
Published QCI on Premium (20%)	4 (QCI 8)	4 (QCI 8)	5 (QCI 7)	US Mobile QCI article — note host implementation caveat
Starter usage-policy framing (15%)	2 (~70 GB note)	5 (unlimited high-speed marketing)	2 (~70 GB note)	US Mobile unlimited onboarding copy
Switcher / multi-host flexibility (10%)	5	5	5	Teleport + Multi-Network available on all hosts
Suburban everyday balance (10%)	4	5	4	Editorial field priors; your RF wins
Weighted total	3.95	3.90	3.85	Network Scrutiny matrix, June 2026

{
  "@context": "https://schema.org",
  "@type": "Dataset",
  "name": "US Mobile three-network shopper score matrix — Warp vs Dark Star vs Light Speed",
  "description": "Editorial weighted comparison of US Mobile Warp, Dark Star, and Light Speed across QCI tiers, usage-policy framing, and coverage priors, June 2026.",
  "datePublished": "2026-06-25",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "inLanguage": "en-US",
  "isAccessibleForFree": true,
  "url": "https://networkscrutiny.com/guides/us-mobile-network-switcher-warp-vs-dark-star-vs-light-speed/#shopper-score-matrix"
}

Where I am less sure: the coverage rows lean on public drive-test aggregates, not a fresh Network Scrutiny sweep of all 3,143 US counties in June 2026. Your block-level RF will move these scores more than any spreadsheet.

---

The three networks at a glance

US Mobile brands three wholesale hosts. Each has its own site inventory, band portfolio, and congestion playbook—even when the retail tier name on your bill says “Unlimited Premium.”

US Mobile brand	Host MNO	Best-known strength	Published QCI (June 2026)
Warp	Verizon	Rural highways, UW mmWave/C-band in cities	Premium 8 · Starter 9
Dark Star	AT&T	Suburban balance, improving mid-band	Premium 8 · Starter 9
Light Speed	T‑Mobile	Urban n41 capacity, low-latency feel	QCI 7 on every plan tier

For the full QCI deep dive without switcher context, see US Mobile QCI levels explained. For Warp-specific Verizon MVNO positioning, see US Mobile Warp 5G review.

Pros / cons — Warp vs Dark Star vs Light Speed

Network	Pros	Cons
Warp	Strongest rural Verizon footprint; Premium QCI 8 published; UW where device + map allow	City congestion on Verizon macros; Starter QCI 9 + ~70 GB policy note
Dark Star	Competitive suburbs; Premium QCI 8; Starter marketed unlimited high-speed	Peaks below T‑Mobile in some urban cores; AT&T fringe varies by county
Light Speed	QCI 7 on all tiers; excellent urban mid-band	Weaker rural gaps; QCI 7 ≠ fastest under load vs QCI 8 on other hosts per US Mobile

---

QCI levels and priority data caps

Congestion scheduling (QCI) and monthly usage policy are different levers. Shoppers comparing US Mobile Warp vs Dark Star often conflate them.

Published QCI map (all three hosts)

Plan tier	Warp	Dark Star	Light Speed
Unlimited Premium	QCI 8	QCI 8	QCI 7
Unlimited Starter	QCI 9	QCI 9	QCI 7
Flex / By-the-Gig	QCI 9 (Warp)	QCI 9 (+ optional QCI 8 add-on)	QCI 7

QCI 8 vs 9 on LTE non-GBR bearers: priority level 8 schedules ahead of level 9 when the sector is stressed (ETSI TS 123.203, accessed June 25, 2026). That only matters when the cell is contested—off-peak speed tests on the same band often overlap.

Priority data caps and usage-policy thresholds

US Mobile’s Unlimited Premium marketing emphasizes unlimited priority data on eligible networks where listed (get-started unlimited, verified June 25, 2026). Starter is where host differences bite:

Starter behavior	Warp	Dark Star	Light Speed
Published QCI	9	9	7
Usage-policy note in unlimited FAQs	May slow after heavy monthly use (~70 GB framing)	Marketed unlimited high-speed on-device	May slow after heavy monthly use (~70 GB framing)
Mechanism	Policy shaping plus QCI queue at congestion	Primarily QCI 9 congestion; different FAQ framing	Policy shaping plus QCI 7 scheduling

Anecdotally, Starter users who blow past 70 GB on Warp report slowdowns even at 2 a.m.—that pattern smells like policy, not deprioritization. Dark Star Starter threads sometimes confuse “no 70 GB note” with “immune to congestion”; both hosts still put Starter on QCI 9 when the scheduler is busy.

For field evidence on AT&T priority tiers, pair this guide with Is US Mobile Dark Star QCI 8 upgrade worth it? and Dark Star vs Warp QCI priority tested.

---

How Teleport switching works

Teleport is community shorthand for US Mobile’s Switch Network workflow (official help, accessed June 25, 2026). It is a line-level host transfer—your phone number stays, but the underlying PLMN registration moves to Verizon, AT&T, or T‑Mobile infrastructure.

What changes vs what stays

Item	After Teleport
Phone number (MSISDN)	Unchanged
Marketing tier (e.g., Unlimited Premium)	Unchanged on bill
Host MNO / PLMN	Changes to destination
QCI / 5QI class	Resets to destination map
Public IP / packet gateway	Usually changes (see Teleport deep dive)
Pooled data buckets	Follow account rules—confirm in app before switching mid-cycle

Teleport rules (June 2026)

• Cooldown: one switch every 4 hours
• Cap: 8 switches per 30-day cycle
• Fees: first two switches free per cycle; $2 each after—free always on Unlimited Premium
• Irreversible: cannot cancel mid-transfer; you must switch back manually
• 2FA required on account
• eSIM: minutes to complete; physical SIM: 4–6 business days for shipment unless you convert to eSIM first

“You can switch networks once every 4 hours, up to a maximum of 8 times per 30-day cycle.”

Teleport vs Multi-Network: Teleport replaces the host under one line. Multi-Network adds extra lines on different hosts that share plan buckets—US Mobile recommends it when coverage is good at home but weak at work, instead of weekly Teleport hops. Operational walkthrough: How US Mobile Teleport works.

---

Named scenarios: who should pick which host

Marcus — I-80 trucker, Pixel 9, 40 GB/mo

Marcus runs Omaha ↔ Salt Lake weekly. Verizon macros dominate rural I-80 pins in our June 2026 coverage priors. He should anchor on Warp Premium (QCI 8) and skip Teleport experiments unless AT&T wins at his home dock in Omaha. Light Speed will frustrate him on Nebraska gaps even with QCI 7.

Priya — UX lead in Austin, iPhone 16, 85 GB/mo hotspot

Priya lives in 78704 where T‑Mobile n41 is dense. Light Speed is her default—QCI 7 on every tier, and Premium bundles higher hotspot allowances per plan grid. If she Teleports to Dark Star for a Dallas client week, she inherits QCI 8 on Premium but loses Austin’s T‑Mobile spectral advantage; Teleport back when the project ends.

James — suburban Atlanta family, four lines, 120+ GB combined

James’s household burns data on Warp Starter and hits the ~70 GB policy wall before month-end. Dark Star Starter is the steel-man case: US Mobile markets unlimited high-speed without the same threshold language—if AT&T RF at 30301 is solid. He should run a two-week A/B on one line before moving the pool: coverage first, FAQ second, QCI third.

---

Steel-man: “Just pick Light Speed for QCI 7”

The best advocate says: Light Speed puts every plan on QCI 7, a higher published class than Warp/Dark Star Premium’s QCI 8, and T‑Mobile’s urban mid-band is the fastest feel in 2026 metros. Why pay Verizon prices on Warp when the integer is worse?

Rebuttal: US Mobile’s own QCI article warns that QCI 8 on Warp or Dark Star usually outperforms QCI 7 on Light Speed during busy hours because host implementation and capacity matter more than the label. QCI 7 on an empty T‑Mobile sector is glorious; QCI 7 at a sold-out stadium still queues. Meanwhile, Starter usage-policy on Warp/Light Speed can slow you after ~70 GB regardless of QCI—Dark Star’s Starter FAQ framing is the outlier, not Light Speed’s QCI integer. Pick host coverage at your pins, then tier, then QCI.

---

Working checklist before you switch hosts

1. Log RF at home, work, and commute — If one host is unusable, no QCI table saves you.
2. Match plan tier to congestion pain — Premium (QCI 8 on Warp/Dark Star) when rush-hour stalls are frequent; Starter only if towers stay quiet.
3. Read Starter usage FAQs for your host — Separate 70 GB policy from QCI 9 congestion.
4. Count Teleport budget — Eight switches per 30 days; $2 after the first two unless Premium.
5. Prefer Multi-Network for two-home coverage instead of biweekly Teleport.
6. Wait 2–5 minutes post-eSIM before speed tests — PLMN and IP must stabilize (methodology).
7. Re-check usmobile.com/plans — Wholesale disclosures change faster than blog tables.

---

Verdict

For most US Mobile network switcher shoppers, the decision order is coverage → usage policy → QCI → Teleport mechanics. Warp remains the default when Verizon wins your geography—especially rural and interstate routines. Light Speed is the right call when T‑Mobile mid-band density at your pins justifies QCI 7 on every tier, accepting US Mobile’s warning that the integer alone does not crown T‑Mobile king under load. Dark Star earns its place when AT&T is locally strong or when Starter-tier usage policy differences matter more than squeezing the last Mbps from QCI 8 on Verizon.

Between US Mobile Warp vs Dark Star on Unlimited Premium, treat them as coverage picks, not QCI picks—both are QCI 8. Use Teleport when you are committing to a new primary host; use Multi-Network when you need two grids without burning eight switches. I have not tested every 2026 handset OEM engineering menu for 5QI readouts—plan tier plus congestion-window behavior remains the practical ground truth.

---

Disclaimer

Network Scrutiny publishes independent research. We cite US Mobile’s QCI article, plan pages, and Switch Network help for mapping and policy claims; we do not have access to live provisioning databases. Confirm pricing, hotspot limits, roaming, and reasonable-use policies on usmobile.com before you buy. Nothing here is legal or professional RF engineering advice.