It's a portable device used to charge mobile phones and tablet computers.
power bank
This word means making you feel slightly angry.
annoying
It's a device that you can wear that records your daily physical activity, as well as other information about your health, such as your heart rate
fitness tracker
Do you always ___________ your planned schedule?
collect
repair
solve
follow
What was a major problem that you had ___________?
collected
tested
solved
repaired
Which app would you recommend people to __________?
click
freeze
crash
install
It means to try to persuade people to buy a product or service by announcing it on television, on the internet, or in newspapers.
adverstise
It's an aircraft without a pilot, controlled from the ground, used for taking photographs, delivering goods, etc.
drone
It means safety from attack, harm or damage.
security
It means to trust someone or something to do the task for you.
rely on
It's a plug-and-play portable storage device that uses flash memory and is lightweight enough to attach to a keychain
USB drive/USB stick/ flash drive
This is a picture or shape used to represent something e.g. @, &, +
symbol
It's a handheld electronic device designed to be used for reading digital materials.
e-reader