Nothing ships. What you receive is installation detail sent to your email address, and how long that takes depends on the supplier behind the plan; it is a matter of the profile being issued rather than of delivery. If you have paid but nothing has arrived, check the spam folder first, then contact us with your order number.

No. If your phone supports two lines at once, keep the home line in for calls and SMS and let the eSIM carry data. The common setup is to switch the home line's data off so it does not use foreign data unintentionally.

Yes, and we recommend it, because installing needs a connection. When the clock starts depends on the individual plan: some begin at first connection to a network, others on a set date. The safe approach is to install but leave the profile switched off until you arrive.

Not in itself. Speed depends on the local network, the frequencies your handset supports, and how busy the area is at that moment. The form of the SIM does not change any of those. The advantage of an eSIM is convenience in preparing and switching, not throughput.

The profile lives in that phone's chip rather than in a cloud account, so it goes with the device. Whether it can be reinstalled elsewhere depends on the issuer's terms, so contact support with your order number as soon as possible, and tell your home operator about the SIM that was in the handset too.

Yes, provided the phone has room. You can install several and switch between them as you move between countries, though how many it stores and how many can be active at once is set by the manufacturer and model. Clearing out expired profiles before a new trip keeps the space available.