Motorola said the error, which the analyst believes could slow sales for the phones, resulted from a faulty component from a supplier. The glitch appears to affect U.S. GSM phones only.

"We are concerned that the defect could point to production, quality control, and yield issues, which may be exacerbated by the large number of new models of phones rolling out in the forthcoming quarters," the research analyst said. She noted that the number of phones impacted by the glitch is minimal, however.

Kalla said she's concerned that the company is "highly dependant" on RAZR sales. The company has not seen smooth production of its new phones, with delays for the PEBL, the SLVR and the Q, she said.

The analyst calculates that T-Mobile and Cingular Wireless have interrupted RAZR sales by approximately 500,000 per week and could affect slightly more than a week's supply of the phones. Cingular is a joint venture between AT&T and BellSouth, which recently announced their intention to merge.