Do you know what this piece of technology is? This is the Motorola Dyna TAC. Hubby had to carry this around back in the day. This is the original portable phone, aka the first cell phone, nicknamed the brick. The brick weighed 2 pound and cost $3995 and featured a half hour of talk time when fully charged. (I just found one on E-Bay for $49.99)
Over burdened repair guys had to carry these phones, along with their tools, with them on their calls. Salesmen had them mounted in their cars. Wall street types would cart them along to their martini lunches.
No one had the brick just in case. For just in case, we had pay phones, or friendly businesses that would let you use the phone in an emergency. The brick had no games that could be played while waiting for an appointment. The brick had no Kindle app for reading while you are waiting. The brick had no camera, no pictures, no social media to share with. The brick was used for business only. (Maybe the very rich used the brick for personal emergencies.)
The miniature version we have today, that we can just be slipped into a pocket, owes a debt to the brick.