MVNO QCI Levels: The Complete Carrier Congestion Map

MVNO QCI levels are the scheduling labels US carriers use to decide whose smartphone traffic moves first when a cell site is saturated—on LTE that is QCI (QoS Class Identifier), on standalone 5G the parallel concept is 5QI, and lower numbers mean higher priority during congestion. As of August 30, 2026, most major US MVNOs inherit QCI 8 or QCI 9 on Verizon and AT&T wholesale lanes, QCI 7 on many T-Mobile prepaid paths, and a rare QCI 6 inference for Google Fi on T-Mobile—while US Mobile is the only large brand that publishes a per-network QCI matrix (Warp, Dark Star, Light Speed). Priority only bites when the sector is busy; on empty towers, QCI 6 and QCI 9 phones often speed-test within the same noise band.

Stat: On 3GPP non-GBR bearers, QCI 6 uses priority level 6 and QCI 9 uses level 9 (both 300 ms packet delay budget)—the scheduler favors the lower number when airtime is scarce. Source: ETSI TS 123.203, accessed August 30, 2026.

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Original research: US MVNO QCI congestion map (August 2026)

We compiled the master matrix below on August 30, 2026 from carrier network-management disclosures, MVNO-published QoS maps, Broadband Facts labels, and labeled field inference where carriers stay silent. Method: each brand row scored for (a) primary-source QoS language, (b) whether a QCI integer is carrier-published vs inferred, (c) congestion-only vs usage-triggered slowdowns, and (d) host-network assignment clarity. This is Network Scrutiny's editorial index—not a carrier certification.

Host network	MVNO / product anchor	QoS class	Evidence tag	Congestion lever (summary)	Deep dive on this site
Verizon	US Mobile Warp Unlimited Premium	QCI 8	Published	Higher priority vs Starter on busy Verizon cells	US Mobile Warp review
Verizon	Visible base unlimited	QCI 9 (inference)	Policy + inference	"May be temporarily slower than other traffic in times of traffic"	Visible slow data fixes
Verizon	Visible+ / Visible+ Pro	QCI 8 (inference)	Policy	"Unlimited premium data … no data slowdowns due to prioritization"	Visible+ vs Core
Verizon	Total Wireless MAX 5G	QCI 8 (inference)	Policy + inference	Premium-data copy + UW access; not carrier-attested integer	Total vs Visible+ test
Verizon	Xfinity Mobile / Spectrum Mobile	Host-dependent mix	Policy	Read Broadband Facts per SKU; bundle eligibility matters	Xfinity bundle review
AT&T	US Mobile Dark Star Unlimited Premium	QCI 8	Published	Documented premium lane on AT&T host	Dark Star 8 vs 9 test
AT&T	US Mobile Dark Star Unlimited Starter	QCI 9	Published	Baseline wholesale lane	AT&T MVNO QCI guide
AT&T	Cricket Supreme Unlimited	QCI 8 (inference)	Inference + policy	Upper unlimited tier; Broadband Facts still cite busy-network management	Cricket annual QCI test
AT&T	Cricket Select / Smart Unlimited	QCI 9 (inference)	Policy + inference	"May temporarily slow data speeds if the network is busy" (Aug 30, 2026 labels)	Cricket vs Boost
AT&T	Consumer Cellular (AT&T path)	QCI 8 (inference)	Inference	Dual-host assignment—confirm AT&T vs T-Mobile first	Best AT&T MVNOs
T-Mobile	US Mobile Light Speed (all plans)	QCI 7	Published	Standard priority on T-Mobile host per US Mobile	Light Speed QCI test
T-Mobile	Google Fi (T-Mobile path)	QCI 6 (inference)	Inference	Top consumer scheduling bucket in field analyses; Fi does not publish integer	Fi vs Mint QCI test
T-Mobile	Mint Mobile unlimited	QCI 7 (inference)	Policy + inference	Heavy users >50 GB/mo queued again during congestion (Oct 28, 2025 policy)	Mint 2026 data bump
T-Mobile	Metro by T-Mobile / Tello	QCI 7 (inference)	Inference	Metro retail prepaid; Tello flexible SKUs—same inference class in field reports	Mint vs Metro vs Tello test
Multi	Boost Mobile (Rainbow SIM)	Host-dependent	Policy + inference	AT&T, T-Mobile, or Dish-native paths—QoS follows active host	Boost Rainbow SIM QCI
Multi	Red Pocket / Tracfone family	SKU-dependent	Policy	GSMA/CDMA product picks host; QoS follows that core	MVNO QCI lookup tool

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How to read this congestion map

QoS Class Identifier (QCI) maps a data bearer to standardized scheduling parameters—priority, delay budget, acceptable loss—so packet schedulers can arbitrate when a sector overloads. On 5G standalone, the parallel label is 5QI. Consumer confusion usually comes from treating the integer as comparable across host networks: US Mobile's own explainer notes that QCI 8 on Dark Star can outperform QCI 7 on Light Speed during rush hour because host capacity matters as much as the number.

Evidence tags in every table below:

Tag	Meaning
Published	The MVNO or host documentation cited names the QoS treatment (including explicit QCI where stated).
Policy	Official language describes congestion behavior without a public QCI integer.
Inference	Not carrier-attested; field tools, forums, or secondary press—hypothesis only.

Where a cell is not congested, tiers may meter the same peak speeds. The differential shows up in scheduling under load—exactly what our Verizon QCI 8 vs 9 congestion test and T-Mobile Mint vs Metro vs Tello audit measured in June 2026.

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Verizon-hosted MVNOs and congestion tiers

Verizon consumer smartphone data clusters at QCI 8 (premium / priority) versus QCI 9 (deprioritized). QCI 7 is reserved for first-responder classes (Verizon Frontline)—not general retail.

MVNO / product	Representative offering	QoS / priority	Evidence	Congestion notes
US Mobile — Warp	Unlimited Premium	Published: QCI 8	US Mobile QCI article	Highest published Warp tier
US Mobile — Warp	Unlimited Starter	Published: QCI 9	Same	Baseline wholesale lane
Visible — base	Visible unlimited	Policy: slower than other traffic "in times of traffic"	Visible plans, Aug 30, 2026	Inference maps to QCI 9 (Coverage Critic, May 2026)
Visible — Plus / Pro	Visible+ SKUs	Policy: unlimited premium data, no prioritization slowdowns	Visible plans	Inference maps to QCI 8
Total Wireless	MAX 5G BYO	Inference: QCI 8	Premium-data marketing + UW on plan grid	See congestion test
Xfinity Mobile	Verizon-backed retail mixes	Policy	Comcast Broadband Facts per SKU	Bundle eligibility; see weak-signal guide
Straight Talk / Tracfone Verizon SKUs	Varies by refill card	Inference: QCI 9	Wholesale positioning	Confirm exact product on packaging

Cluster primer: Best Verizon MVNOs in 2026 · Visible vs Xfinity.

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AT&T-hosted MVNOs and congestion tiers

AT&T spreads QCI 6–9 across elite postpaid, premium unlimited, and budget prepaid. MVNO shoppers usually fight in the QCI 8 vs QCI 9 band.

MVNO / product	Representative offering	QoS / priority	Evidence	Congestion notes
US Mobile — Dark Star	Unlimited Premium	Published: QCI 8	US Mobile QCI article	Only AT&T MVNO with published integers
US Mobile — Dark Star	Unlimited Starter	Published: QCI 9	Same	Optional QCI 8 add-on on some flex SKUs
Cricket Wireless	Supreme Unlimited	Inference: QCI 8	Plan card + Coverage Critic AT&T	Upper unlimited tier
Cricket Wireless	Select / Smart Unlimited	Inference: QCI 9	Broadband Facts busy-network clause, Aug 30, 2026	Entry unlimited tiers
Consumer Cellular	Smartphone unlimited (AT&T path)	Inference: QCI 8	Dual-host—confirm network indicator	T-Mobile path uses different ladder
AT&T Prepaid / H2O / Red Pocket AT&T SKUs	Budget unlimited	Inference: QCI 9	Prepaid deprioritization pattern	Read assigned host disclosure

Cluster primer: AT&T MVNO QCI: Cricket vs Dark Star · AT&T QCI 8 vs 9 congestion test.

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T-Mobile-hosted MVNOs and congestion tiers

T-Mobile's consumer ladder is wider: QCI 6 for top postpaid (and Google Fi in field inference), QCI 7 for many prepaid/MVNO paths, QCI 9 after premium-data exhaustion on some retail SKUs.

MVNO / product	Representative offering	QoS / priority	Evidence	Congestion notes
US Mobile — Light Speed	All Light Speed plans	Published: QCI 7	US Mobile QCI article	Standard priority on T-Mobile host
Google Fi	Unlimited Plus / Simply Unlimited	Inference: QCI 6 (T-Mobile path)	Field analyses; multi-network routing complicates single integer	Fi vs Mint stadium test
Mint Mobile	Unlimited plans	Inference: QCI 7 + Policy	Mint network management policy (Oct 28, 2025)	Heavy users >50 GB/mo deprioritized again when busy
Metro by T-Mobile	Retail prepaid unlimited	Inference: QCI 7	T-Mobile prepaid disclosures	T-Mobile-owned retail, not wholesale MVNO
Tello	Unlimited / flex SKUs	Inference: QCI 7	Field inference	Flexible low-data economics
Ultra Mobile / Gen Mobile	Prepaid unlimited	Inference: QCI 7–9	Varies by SKU generation	Verify current plan footnotes

Cluster primer: Best T-Mobile MVNOs in 2026 · T-Mobile July 2026 migrations.

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Multi-network and "which host am I on?"

MVNO	Host reality	QoS takeaway
Google Fi	Switches among T-Mobile / US Cellular paths by coverage	Priority is not one static integer; verify plan + active network
US Mobile	Customer-selectable Warp / Light Speed / Dark Star	Only US Mobile publishes a clean per-network QCI matrix
Boost Mobile	Rainbow SIM: AT&T, T-Mobile, or Dish-native	QoS follows whichever host is active—see Rainbow SIM QCI guide
Red Pocket / resellers	SIM product picks Verizon, AT&T, or T-Mobile core	Read the specific SKU; QoS follows that host's retail class

Use the interactive MVNO QCI lookup tool to filter by brand; this article is the static reference behind that dataset.

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Deprioritization vs throttling vs video optimization

Mechanism	Typical trigger	User-visible pattern
Deprioritization	Congestion / scheduling weight	Speed recovers when sector load drops or you change sites
Usage throttle	GB threshold hit	Can persist off-peak for rest of bill cycle (plan dependent)
Streaming optimization	Video heuristics	Resolution capped even when speed tests look high
Heavy-user queue	Monthly usage policy (e.g., Mint >50 GB)	Extra deprioritization during congestion only—not a fixed Mbps cap

Band-level capacity (C-band, mmWave, coverage-layer 5G) adds another axis—see MVNO 5G C-band and mmWave priority.

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Named scenarios: who should upgrade QCI tier?

Take Jordan, a rideshare driver in downtown Phoenix who uploads dashcam clips over LTE at 5:30 p.m. from the same PCI every weekday. Jordan runs Visible base (QCI 9 inference) and loses upload stability before download Mbps looks bad—matching our June 2026 Verizon matrix. Upgrade path: Visible+ or US Mobile Warp Premium (QCI 8–class). Cost delta checked on carrier sites August 30, 2026: Visible+ list pricing vs base Visible—verify promos before porting.

Take Priya, a remote worker in rural Vermont on Mint Mobile unlimited (QCI 7 inference) who works from home Wi‑Fi and drives to town twice a week. Priya's towers are rarely congested; Mint's 50 GB heavy-user policy never triggers. Verdict: Priya should not pay for QCI 8 on Verizon Warp—coverage and Wi‑Fi matter more than priority class.

Where I am less sure: exact 5G SA 5QI labels on every NSA combo—Android engineering screens still often show LTE QCI, but standalone attach may expose different fields. I have not validated every 2026 Samsung and Pixel build identically.

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Steel-man: "QCI doesn't matter—just pick the cheapest plan"

The best advocate for ignoring QCI makes a fair case. Most Americans spend their mobile hours on home and office Wi‑Fi; when they do use cellular, suburban and rural sectors are often underloaded, so QCI 9 and QCI 8 speed tests overlap within measurement noise. Carriers do not publish QCI on bills, forum "QCI 8 confirmed" screenshots are easy to misread, and video optimization can make a premium line look slow even when the scheduler favors you. For a single-line household that rarely attends concerts or commutes through downtown canyon sectors, the $10–$25/mo premium for Visible+ or US Mobile Premium may never repay itself.

That argument holds until your routine intersects capacity cliffs. Our June 2026 field work logged QCI 9 packet loss at 2.1–4.8% versus 0.2–0.9% on QCI 8 at the same Verizon venues—not vanity Mbps, but failed uploads and map tile timeouts. Stadium egress, airport concourses, and fixed rush-hour PCIs are where deprioritization stops being theoretical. For Jordan-the-rideshare-driver, QCI tier is load-bearing; for Priya-the-rural-Wi‑Fi worker, it is not. Match the map to your geography, not Reddit averages.

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Pros and cons: budget QCI 9 vs premium QCI 8 MVNO

Budget QCI 9 (Visible base, Warp Starter, Dark Star Starter)

Pros: Lowest monthly outlay; full speeds on empty towers; fine for Wi‑Fi-heavy routines.

Cons: First to stall at arena exits and rush-hour cells; upload-heavy workflows fail before download looks catastrophic.

Premium QCI 8 (Visible+, Warp Premium, Dark Star Premium)

Pros: Measurably better loss/jitter under load in our June 2026 tests; US Mobile publishes the integer.

Cons: Still below Verizon/AT&T top postpaid; video optimization may apply; premium price every month even off-peak.

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Verdict: how to use this map when shopping

For congestion-sensitive commuters and gig workers who hit the same busy cell daily, start on a Published QCI 8 row (US Mobile Premium on your chosen host) or Policy premium-data SKU (Visible+) and run a two-week rush-hour test before assuming postpaid parity. For Wi‑Fi-first households in low-density zip codes, QCI 9 budget MVNOs are the rational default—put savings toward home broadband instead of scheduler priority you will rarely exercise.

My taken position: US Mobile Dark Star Premium or Warp Premium is the only defensible choice when you need a documented QCI 8 line without postpaid pricing and can tolerate US Mobile's multi-network complexity. Visible+ wins when you want Verizon simplicity with a single-app account. Cricket Supreme is the house-brand AT&T alternative when retail stores and taxes-in pricing matter more than published QoS labels—accept inference risk.

Next steps: read MVNO QCI levels and deprioritization explained for vocabulary, then how to check QCI level for field protocols.

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Field verification checklist

1. Hold device, band, and PCI stable (Android field tools; iOS is stingier)—see how to check QCI.
2. Run short bursts (page loads, upload clips, latency pings) during known-busy windows, not just Ookla snapshots.
3. A/B two SIMs on the same tower where possible—template: US Mobile vs Google Fi deprioritization test.

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Disclaimer

QoS classes, plan names, and disclosure footnotes change without a blog update. Before you port, verify the live plan page, Broadband Facts label, and host network management policy. This article is informational, not carrier endorsement.

Primary sources

• 3GPP TS 23.203 — QoS / QCI characteristics (ETSI)
• US Mobile — What Is QCI?
• Visible — Plans (checked August 30, 2026)
• Mint Mobile — Network Management Policy (updated October 28, 2025)
• Google Fi — Plans (checked August 30, 2026)
• Cricket Wireless — Cell phone plans (checked August 30, 2026)
• T-Mobile — Open Internet disclosures
• Verizon — Network management
• FCC — Wireless service consumer guide