The words below appear on provider pages and in our guides. Each definition is written for a visitor buying data for a trip to the UAE.
- eSIM
- A SIM profile downloaded to a chip built into the phone. You install it from a QR code or a provider app instead of inserting a plastic card.
- Travel eSIM
- A prepaid data plan from a provider outside the destination country, used on a local partner network. Most UAE travel eSIMs are data only.
- Activation
- The moment the plan starts. TonMobile, for example, counts plan days from activation and allows activation within 180 days of purchase.
- Validity
- How many days a plan lasts once it starts, such as 7 or 30 days.
- Data roaming
- A phone setting that lets a line use a network other than its home network. Travel eSIMs often connect as roaming lines.
- Cellular data line
- The line your phone uses for mobile internet. On iPhone you choose it in Settings, Cellular, Cellular Data.
- Carrier lock
- A restriction that ties a phone to one operator. A locked phone cannot use another provider's travel eSIM; on iPhone, Settings, General, About shows "No SIM Restrictions" when it is unlocked.
- Unlimited plan
- A plan with no hard data cap but a daily full-speed allowance. After it, speed drops, for example to 512 kbps on TonMobile or 1 Mbps on Nomad.
- Fair usage
- A rule that lets a provider slow heavy users on unlimited plans. Holafly states it may apply one in the UAE.
- Hotspot
- Sharing your phone's data with a laptop or another phone. Some plans cap it, such as Holafly at 500 MB a day.
- TDRA
- The Telecommunications and Digital Government Regulatory Authority, the UAE regulator that oversees e& and du and the rules on app calling.
- e& and du
- The two national mobile operators in the UAE. e& was formerly called Etisalat.
- Licensed calling app
- An internet calling app allowed in the UAE, such as Botim.
- EID
- The embedded identifier, a long number that identifies the eSIM chip in your phone. Some providers ask for it when they issue a profile. On iPhone you can find it in Settings, General, About.
- IMEI
- A number that identifies your phone itself, not the SIM. It is shown in the phone's About screen or by dialling *#06#, and support teams may ask for it when checking device compatibility.
- eSIM profile
- The downloadable data that makes an eSIM work: the plan, network settings and identifiers. Deleting the profile usually removes the plan, and a deleted profile often cannot be reinstalled. TonMobile's terms list a deleted or incorrectly installed profile among the cases with no refund.
- QR code install
- The usual way to add an eSIM: you scan a QR code from the provider's email or app. Use Wi-Fi, since the profile downloads over the internet. Some providers offer an install button in their app instead.
- SM-DP+ address
- The server address that delivers an eSIM profile to your phone. A QR code contains it. Providers sometimes show it as text for manual install; copy it exactly as given and never share it publicly.
- Manual install
- Adding an eSIM by typing the details your provider gives you, such as the SM-DP+ address and an activation code, instead of scanning a QR code. It is the fallback when a camera cannot read the code.
- APN
- Access point name, the setting that tells your phone how to reach a network's internet service. Most travel eSIMs set it automatically. If data does not work, the provider's instructions may list a value to enter.
- Dual SIM
- Having two lines active on one phone, for example your home SIM and a travel eSIM. It lets you keep your number for SMS and calls while the travel eSIM handles mobile data.
- Physical SIM vs eSIM
- A physical SIM is a plastic card you insert; an eSIM is installed in software. A tourist SIM in the UAE is usually a physical card bought at a shop or kiosk, while a travel eSIM can be bought and installed from home.
- Data-only plan
- A plan with mobile data but no phone number, calls or SMS. TonMobile's UAE eSIM is internet only, and its terms say it cannot receive SMS. Nomad and Holafly UAE plans are also data only.
- Local number
- A UAE phone number that comes with a plan. Visitor SIM cards from UAE operators may include one, while most travel eSIMs do not.
- Fixed data plan
- A plan with a set amount of data for a set number of days, such as 5 GB for 30 days. When the data is used up, the plan stops until you add more.
- Throttling
- Slowing your connection after a limit is reached, rather than cutting it off. On UAE unlimited plans, speed drops after the daily full-speed allowance.
- Fair usage policy
- The rules a provider uses to limit heavy use on plans advertised as unlimited, for example by slowing speeds. Read the provider's terms to see whether and how one applies.
- Top-up
- Adding more data or days to a plan you already have. Not every provider supports it for every plan, so check before you rely on it abroad.
- Pay as you go
- Paying for data as you use it instead of buying a fixed bundle. Roamless describes RoamlessFlex as pay as you go with no expiry, per its own page.
- Activation window
- The period in which you can start a plan after buying it. TonMobile's UAE page says activation within 180 days. It is separate from validity, which is how long the plan lasts once it has started.
- Roaming partner
- The local operator whose network a travel eSIM uses. Airalo says its UAE plans use Etisalat, and Holafly and Roamless say du. TonMobile does not name its UAE partner network on its plan page.
- Network lock
- Another name for a carrier lock, a restriction tying the phone to one operator. Only the operator that locked it can lift it.
- Tethering
- Using your phone as a hotspot to give a laptop or another device internet access. It follows the same plan data and any hotspot cap.
- VoIP
- Voice over IP: calls made over the internet through an app instead of the phone network. In the UAE, only licensed VoIP apps such as Botim are intended for calling; WhatsApp and FaceTime calls are restricted.
- Wi-Fi calling
- A phone feature that makes calls through Wi-Fi using your operator's service. Whether it works in the UAE depends on your home operator and the local rules, so check with your operator before relying on it.
- Compatibility check
- A tool that tells you whether your phone supports eSIM. TonMobile's app includes one, and its UAE plan page has a device check button.
- Refund eligibility
- The conditions under which a provider returns money. TonMobile, for example, requires the request before the plan expires and lists specific cases, such as an unsupported device or data not working after support confirmed the issue. Other providers' terms differ.
See these terms in use in the Dubai eSIM guide and the trip notes.