o2 Deutschland's 30-day option is €14.99. A Slashtel eSIM with at least 2GB for the same trip is €5.63. Keep your o2 Deutschland number for calls and texts.
Buy the Bangladesh eSIM →o2 Deutschland's 30-day O2 Roaming Plus World option costs €14.99 (2GB of data). A Slashtel data eSIM for Bangladesh with at least 2GB for 30 days costs $6.29, about €5.63, so €9.36 less. The eSIM is data only: keep your German SIM in the phone for calls and texts. o2 Deutschland prices checked on o2online.de on 26 October 2026.
| o2 Deutschland | Includes | Slashtel eSIM (same days or more) | Difference |
|---|---|---|---|
| €14.99 · 30 days | 2GB data only | 3GB, 30 days: $6.29 (≈€5.63) | €9.36 less |
o2 Deutschland prices from o2online.de, checked 26 October 2026; o2 Deutschland's options include calls as well as data. Where o2 Deutschland charges by the day, we compare an eSIM with at least 1GB a day. o2 Germany Roaming Plus World (contract) price and country list from o2online.de, plus per-country Roaming Standard rates from o2's Auslandsoptionen selector, checked 26 Oct 2026 (summer 4GB promotion has ended; 2GB now). Without a pack, data costs 0.99 EUR/MB in zone 3 (e.g. USA, Canada, Turkey) and 1.49 EUR/MB in zone 4; payg listed only where Roaming Plus World does not apply. UK is billed at EU prices until 31 Dec 2026 (renewal reserved), so excluded. Prepaid has a separate Roaming Plus World Pack (1GB, 7 days, 9.99 EUR) whose country list was not published; not modelled. Slashtel prices are live, in US dollars, converted at 0.90 per $1 (daily reference rate); your card is charged in your own currency at checkout. o2 is a trademark of Telefonica Germany GmbH & Co. OHG. Slashtel is not affiliated with o2 Deutschland.
Yes, o2 Deutschland roams in Bangladesh, at €14.99 for 30 days on its O2 Roaming Plus World option (checked 26 October 2026). A travel eSIM gives you local data there instead, while your o2 Deutschland number stays active for calls and texts.
For data, the eSIM. o2 Deutschland's 30-day option is €14.99; a Slashtel eSIM with 3GB for 30 days is $6.29 (about €5.63). o2 Deutschland's option also includes calls, which the eSIM does not.
Yes. The eSIM is added alongside your o2 Deutschland SIM, so your number stays in the phone for calls and texts such as bank codes. Set the eSIM as the line for mobile data and turn data roaming off on the o2 Deutschland line. Whether o2 Deutschland charges for anything you receive abroad depends on your plan, so check with o2 Deutschland before you travel.
No. It is data only, with no phone number. You can call on WhatsApp, FaceTime or similar apps over the eSIM data.
Most iPhones from the XS onwards, Google Pixel 3 and later, and recent Samsung Galaxy S, Z and A models, provided the phone is not carrier-locked. Check under Settings for an option to add an eSIM.
Install it at home before you fly, while you have Wi-Fi, and switch mobile data to it when you land.