Network tech
The Complete MVNO QCI & Data Priority Master List
US MVNO QCI levels and data priority: published QoS mappings where available, official deprioritization and throttling rules, and how major Verizon, AT&T, and T-Mobile hosted brands compare—with primary sources.
- Updated
- 2026-05-13
- Reading time
- 18 min
TL;DR
QCI (and 5G 5QI) labels describe scheduling priority when a cell site is busy. Only a handful of US MVNOs publish plan-to-QCI mappings; everyone else should be read through host-carrier “premium,” “deprioritized,” or heavy-use disclosures. This master list groups major brands by host network and labels each row by evidence type—carrier-published QoS, official policy language, or community/field inference—so you can compare without treating rumors as specs.
- Lower QCI / higher-priority classes mostly matter during congestion; idle towers often feel similar across tiers.
- US Mobile publishes explicit QCI 7 / 8 / 9 mappings per network (Light Speed, Warp, Dark Star); most other MVNOs describe outcomes without naming QCI.
- Deprioritization (congestion) and throttling (usage triggers or video optimization) are different mechanisms; the table calls out which applies.
- Mint Mobile’s network management policy defines “Mobile Wireless Heavy Data Users” (>50 GB/mo on unlimited) as lower priority during congestion—not a fixed speed cap.
- Visible’s base plan warns data may be temporarily slower than other traffic in times of traffic; Visible+ / Visible+ Pro advertise unlimited premium data without prioritization slowdowns on Verizon’s networks.
How to read the master list
Columns use evidence tags:
| Tag | Meaning |
|---|---|
| Published | The MVNO or host operator documentation cited names the QoS treatment (including explicit QCI where stated). |
| Policy | Official language describes congestion behavior, heavy-use tiers, or premium data without a public QCI integer. |
| Inference | Not carrier-attested; field tools, forums, or secondary press—use as hypothesis only. |
Where a cell is not congested, Published vs Policy tiers may meter the same peak speeds. The differential shows up in scheduling under load. 1
QCI / 5QI in one minute
On LTE, QCI (QoS Class Identifier) maps a default bearer to priority, delay budget, and loss targets so packet schedulers can arbitrate during overload. On 5G NR, the parallel concept is 5QI—same idea, richer standardized set (see 3GPP TS 23.501 for 5QI tables). Consumer confusion usually comes from assuming the integer is comparable across host networks; US Mobile’s own explainer stresses that operator mapping policy can make identical labels feel different in the field.
Verizon-hosted brands and plans
| MVNO / product | Representative unlimited or core offering | QoS / priority (evidence) | Congestion & caps (policy notes) | Primary disclosures |
|---|---|---|---|---|
| US Mobile — Warp | Unlimited Premium | Published: QCI 8 | Unlimited Premium marketed with higher priority than Starter on Verizon-side unlimited. | US Mobile QCI article |
| US Mobile — Warp | Unlimited Starter | Published: QCI 9 | Lower priority tier than Premium on Warp during busy cells. | US Mobile QCI article |
| Visible — base | Visible (unlimited) | Policy: “may be temporarily slower than other traffic in times of traffic” (no QCI integer) | SD streaming disclosure; hotspot speed tier (see current plan footnotes). | Visible plans + disclosures |
| Visible — Plus / Pro | Visible+ / Visible+ Pro | Policy: “Unlimited premium data … no data slowdowns due to prioritization” on Verizon 5G & LTE when not on UW (per plan superscripts) | Hotspot Mbps tiers differ by SKU; video resolution disclosures by network. | Visible plans + disclosures |
| Xfinity Mobile | Various Verizon-backed retail mixes | Policy (typical): compare Comcast plan PDFs / Broadband Facts for premium vs deprioritized language | Bundle eligibility and host-network variants matter; verify current disclosures. | Xfinity Mobile plans |
| Spectrum Mobile | Retail mixes on Verizon infrastructure | Policy: treat like Verizon-hosted MVNO—read Broadband Facts | Video and hotspot rules vary by plan generation. | Spectrum Mobile consumer disclosures (verify current) |
Cluster context: for shopping mechanics without inventing cross-brand QCI, pair this table with Best Verizon MVNOs in 2026 and Visible+ vs Visible Core. US Mobile’s Verizon positioning is expanded in US Mobile Warp 5G review.
AT&T–hosted brands and plans
| MVNO / product | Representative offering | QoS / priority (evidence) | Congestion & caps (policy notes) | Primary disclosures |
|---|---|---|---|---|
| US Mobile — Dark Star | Unlimited Premium | Published: QCI 8 | Same QCI 8 / 9 split framing as Warp for AT&T-hosted unlimited tiers. | US Mobile QCI article |
| US Mobile — Dark Star | Unlimited Starter | Published: QCI 9 | Optional QCI 8 add-ons described for some flex / by-the-gig shapes. | US Mobile QCI article |
| Cricket Wireless | Core unlimited lines | Policy: AT&T prepaid / Cricket disclosures emphasize deprioritization relative to AT&T’s own traffic on many plans—verify plan card | Heavy data thresholds have appeared on retail unlimited SKUs; always read the current plan page. | Cricket plan disclosures + AT&T network management references |
| Consumer Cellular | Mix of AT&T or T-Mobile depending on assignment | Policy: read your assigned network’s host disclosure | Not a single static host for all SIMs—confirm account network. | Consumer Cellular plan / help center |
T-Mobile–hosted brands and plans
| MVNO / product | Representative offering | QoS / priority (evidence) | Congestion & caps (policy notes) | Primary disclosures |
|---|---|---|---|---|
| US Mobile — Light Speed | All plans on Light Speed | Published: QCI 7 “standard priority” for this network | US Mobile notes QCI 7 on T-Mobile can still trail QCI 8 on Verizon/AT&T in some congested scenarios—host matters. | US Mobile QCI article |
| Mint Mobile | Unlimited plans | Policy: after >50 GB/mo (mobile heavy data user definition), traffic may be prioritized below other customers during congestion | No hard speed throttle solely for crossing 50 GB—effect is queueing when busy. Separate video optimization language (often SD-class targets). | Mint network management policy (updated Oct 28, 2025) |
| Metro by T-Mobile | Retail prepaid unlimited | Policy: Metro disclosures track T-Mobile prepaid deprioritization / premium data language by SKU | Compare current Metro Broadband Facts to Magenta / prepaid anchors. | Metro plan pages |
| Google Fi | Simply Unlimited vs Unlimited Plus (examples) | Inference / mixed: Fi’s multi-network routing complicates single-QCI summaries; see dedicated on-site tests | Different unlimited SKUs carry different high-speed data and hotspot rules; read Fi’s plan tables—not headline prices—for throttle math. | Google Fi plans |
T-Mobile cluster primer: Best T-Mobile MVNOs in 2026.
Google Fi vs Mint (stadium-style QCI narrative): community and field threads often claim Fi ≈ QCI 6 vs Mint ≈ QCI 7 on certain T-Mobile bearers; carriers rarely confirm. Treat QCI 6 vs QCI 7: Google Fi and Mint in crowded venues as a hypothesis explainer, not a certification.
Multi-network and “which host am I on?”
| MVNO | Host reality | QoS takeaway |
|---|---|---|
| Google Fi | Switches among T-Mobile / US Cellular / (historically) Sprint artifacts depending on plan generation & coverage | Priority is not a single static integer; verify plan + network path. |
| US Mobile | Customer-selectable Warp / Light Speed / Dark Star maps | Only US Mobile in this list publishes a clean per-network QCI matrix today. |
| Red Pocket / assorted resellers | SIM product picks Verizon, AT&T, or T-Mobile core | Read the specific GSMA / CDMA SKU; QoS follows that host’s retail class. |
Throttling vs deprioritization vs “video optimization”
| Mechanism | Typical trigger | User-visible pattern |
|---|---|---|
| Deprioritization | Congestion / scheduling weight | Speed recovers when the sector load drops or you move sites. |
| Usage throttle | GB threshold hit | Can persist for the rest of the bill cycle even off-peak (plan dependent). |
| Streaming optimization | Video heuristics / partner protocols | Resolution capped or rate-shaped even when speed tests look high. |
Band-level capacity (C-band, mmWave, coverage-layer 5G) adds another axis—see MVNO 5G C-band & mmWave priority.
Field verification (for readers who test like r/NoContract)
- Hold device, band, and PCI stable (Android field tools; iOS is stingier).
- Run short bursts (web page loads, upload clips, latency pings) during known-busy windows, not just Ookla snapshots.
- A/B two SIMs on the same tower where possible—our US Mobile vs Google Fi QCI-style deprioritization test template shows why paired tests beat rumor.
Disclaimer
QoS classes, plan names, and disclosure footnotes change without a blog update. Before you port your number, verify the live plan page, Broadband Facts label, and host network management policy. This article is informational, not carrier endorsement.
Footnotes
-
QCI maps a data bearer to standardized scheduling parameters (priority, delay budget, acceptable loss). It does not replace RF coverage, backhaul, or interconnection quality—those dominate when the sector is lightly loaded. ↩
FAQ
Short answers; details are in the article above.
- QCI defines a standardized treatment class, but host capacity, band/cell loading, device RF, routing, and how retailers map products to QoS all change real-world throughput. Treat QCI as relative priority on a given host network, not a speed guarantee.
- US Mobile documents QCI 7 for all Light Speed (T-Mobile) plans, QCI 8 vs 9 splits on Warp (Verizon) and Dark Star (AT&T) unlimited tiers, and optional QCI 8 add-ons on some Dark Star flexible plans—see its public QCI explainer and confirm current plan pages before buying.
- Not necessarily. Many carriers apply streaming video optimization (often “480p” style targets) independent of QCI. Check the brand’s plan disclosure for on-device video resolution and whether VPN or tethering changes detection.
- The explainer teaches mechanics; this article is a consolidated reference table for major brands with sourcing notes. Start with the explainer if you are new to QoS vocabulary.