Phunware, Inc. Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Warrant Activity (Details) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Class of Warrant or Right [Line Items]
Number of warrants (in shares)	5,636,801	5,996,112
2020 Convertible Notes warrant
Class of Warrant or Right [Line Items]
Cash exercise price per share (in dollars per share)	$ 2.25	$ 4.00
Number of warrants (in shares)	35,555	2,160,000
Common stock warrant (Series D-1)
Class of Warrant or Right [Line Items]
Cash exercise price per share (in dollars per share)	$ 2.25	$ 5.54
Number of warrants (in shares)	377,402	14,866
Common stock warrants (Series F)
Class of Warrant or Right [Line Items]
Cash exercise price per share (in dollars per share)	$ 9.22	$ 9.22
Number of warrants (in shares)	1,761,291	377,402
Public Warrants (PHUNW)
Class of Warrant or Right [Line Items]
Cash exercise price per share (in dollars per share)	$ 11.50	$ 11.50
Number of warrants (in shares)	1,658,381	1,761,291
Private Placement Warrants
Class of Warrant or Right [Line Items]
Cash exercise price per share (in dollars per share)	$ 11.50	$ 11.50
Number of warrants (in shares)	1,780,000	1,658,381
Unit Purchase Option Warrants
Class of Warrant or Right [Line Items]
Cash exercise price per share (in dollars per share)	$ 11.50	$ 11.50
Number of warrants (in shares)	24,172	24,172