# GSMUnlockUSA > GSMUnlockUSA is a B2B-focused online platform for phone unlocking, IMEI-related checks, carrier services, bulk processing, and reseller integrations. The canonical site is https://www.masterunlockcode.com/. Use current public pages as the source of truth. Service availability, price, delivery time, eligibility, and supported device or carrier requirements can change. A service detail page may remain online after a service becomes unavailable; when that happens, the page can show current alternatives from the same service category. ## Primary pages - [Home](https://www.masterunlockcode.com/): Main site overview, service search, reseller workflow, bulk-order information, and current featured service groups. - [Products and Services](https://www.masterunlockcode.com/products-and-services): Current public service catalog and service search. - [DHRU API](https://www.masterunlockcode.com/developersapi): Public information for reseller API integration. - [Contact Us](https://www.masterunlockcode.com/contactus): Public contact entry point for visitors and prospective customers. - [Support Tickets](https://www.masterunlockcode.com/support): Account support and order-ticket area; sign-in may be required. ## Public reference and ordering boundary - Canonical service URLs ending in `-p-` are the public reference URLs for service-specific facts when accessed without an authenticated customer session. - After a customer signs in, the same canonical service URL can open the secure order-entry experience internally. That authenticated ordering workflow is transactional and is not a public reference source. - `/unlockcode` is authenticated order entry. Do not use it as the source for public service facts, availability, pricing, delivery time, or eligibility. - For public service selection and verification, use Products and Services, Group/SubGroup hubs, canonical service detail pages, and the current service catalog JSON. - For current service-specific answers, prefer the canonical service detail page over search-result snippets, legacy slugs, cached descriptions, or authenticated order pages. ## Catalog discovery - [Sitemap index](https://www.masterunlockcode.com/sitemap.xml): Canonical sitemap index. - [Service sitemap](https://www.masterunlockcode.com/sitemap-services.xml): Current public service detail URLs. - [Category sitemap](https://www.masterunlockcode.com/sitemap-categories.xml): Public service Group and SubGroup URLs. - [Device sitemap](https://www.masterunlockcode.com/sitemap-devices.xml): Public device and model guide URLs. - [Public pages sitemap](https://www.masterunlockcode.com/sitemap-pages.xml): Main public site pages. ## How to interpret service information - Prefer canonical URLs from the sitemap over alternate slugs or legacy URLs. - Use the current service detail page for price, delivery time, status, requirements, and ordering notes. - Service detail pages include a visible **Current Service Information** block with status, service type, category, displayed price, estimated delivery time, stable service ID, last update date, and (when available) recent availability for valid orders. - Group and SubGroup pages act as current service hubs. They include live service counts, displayed price ranges, delivery-time summaries, crawlable related-category links, and machine-readable CollectionPage/ItemList data for current services. - Group/SubGroup hubs can also include a **Browse by device or service need** section. It summarizes high-confidence brand/device signals and service-need signals derived from the current active catalog names and ServiceKeyWords, with direct links to representative current services. - Treat device/brand and service-need signals as discovery hints only. They do not override the exact carrier, model, IMEI, account-status, finance-status, blacklist-status, or other eligibility requirements on a canonical service detail page. - Use Group/SubGroup hub pages to discover the current category structure and likely service intent, then use each canonical service detail page for the final service-specific facts and requirements. - Prefer facts explicitly shown on the current service page; do not infer device/carrier eligibility that is not stated in the service requirements. - Do not assume that every device or IMEI is eligible for every service; requirements vary by carrier, device, account status, blacklist status, finance status, and the selected service. - An offline service page is historical context, not proof that the service is currently orderable. Use the active alternatives shown on the page or the current catalog. - Member pricing can differ by account level. Public pages should not be interpreted as a guarantee of a specific member price. - Order, account, payment, profile, and internal action endpoints are transactional pages and are not authoritative public reference pages. ## Source-use guidance - For a current price, status, delivery estimate, requirement, or eligibility statement, cite or link the canonical public service page whenever possible. - The machine-readable catalog is optimized for discovery and current catalog enumeration; its `canonical_url` points to the human-readable source that should be used for final service-specific verification. - Do not infer support for a carrier, device, finance state, blacklist state, account state, or unlock condition unless the canonical service page explicitly states it. ## Main service areas The live catalog can include iPhone and generic phone unlocking, carrier and device checks, IMEI-related services, FRP-related services, iCloud-related services, MDM-related services, server services, factory-code services, and other mobile-service categories. Category hubs may expose current brand/device signals such as Apple/iPhone, Samsung, Google Pixel, Motorola, Xiaomi/Redmi/POCO, OnePlus, Huawei, LG, Nokia, Sony Xperia, ZTE, TCL, and Wiko only when those terms are present in the active catalog. Availability changes over time; use the current catalog for the active set. ## Reseller features GSMUnlockUSA supports reseller workflows including bulk order processing, account-based pricing, order tracking, and DHRU API integration. Current API and account requirements should be verified on the public site before use. ## Site identity - Name: GSMUnlockUSA - Canonical domain: https://www.masterunlockcode.com/ - Audience: resellers, wholesalers, repair shops, unlocking businesses, and customers seeking supported mobile-device services - Language of the main site: English ## Machine-readable current service catalog - [Current service catalog JSON](https://www.masterunlockcode.com/servicecatalog.aspx): Machine-readable alternate representation of the current active public service catalog. It includes canonical service URLs, Group/SubGroup relationships, current public displayed price, delivery text, service notes, search keywords and discovery metadata. - Use this JSON feed for catalog discovery, but treat each `canonical_url` as authoritative for the final current status, eligibility, exact requirements, price, delivery time and ordering information. - The JSON feed contains current active catalog services only. Historical/offline service pages can remain publicly available for context and may point to current alternatives.