EXHIBIT 4 MEMORANDUM OF UNDERSTANDING This Memorandum of Understanding ("MOU") is entered into as of August 8, 2000 (the "Effective Date"), by and between Phone.com, Inc., a Delaware corporation with its principal place of business at 800 Chesapeake...Memorandum of Understanding • August 17th, 2000 • Phone Com Inc • Services-prepackaged software
BY AND AMONGMerger Agreement • August 17th, 2000 • Phone Com Inc • Services-prepackaged software • Delaware
RECITALS:Voting Agreement • August 17th, 2000 • Phone Com Inc • Services-prepackaged software • Delaware
WITNESSETH:Stock Option Agreement • August 17th, 2000 • Phone Com Inc • Services-prepackaged software • Delaware
