| Computer-telephone link |
| Brand on a soda machine button |
| Panic-button pusher |
| Brain-scan letters |
| All, e.g., for this answer's last six letters? |
| Archaeologist's letters |
| Ail" homophone |
| Organizations with Greek letters |
| Confusing statements ... and a hint to the circled letters |
| Shakespearean title character in the NATO phonetic alphabet |
| Android alternative for smartphones |
| Prefix for phone or bucks |
| Surprises unpleasantly, and a hint to each starred answer's first two + last two letters |
| Accompaniers of cover letters: Abbr. |
| Attend a party uninvited ... and a literal hint to five sets of circled letters |
| Adjust space between letters, in printing |
| Emergency phones |
| Whatever it takes ... as hinted at in the arrangements of black squares around the circled letters |
| Slogan on a '50s red-white-and-blue button |
| Personal letters |
| Letters from the family? |
| Retirement plan letters |
| Fighter pilot's emergency button |
| Air" homophone |
| Bounced-check letters |
| New phone, who ___?" (insult used on social media when pretending not to know someone) |
| Anagram and homophone of a cartoon shriek |
| Upturned-thumb Facebook button |
| Letters preceding an assumed name |
| Concave belly buttons, informally |