The Ace of Wands suggests that you are about to start a new project or idea. This may imply that it is a favorable time for you to do something new and brave, like buying a new device. Your energy is high and you are likely to have the drive to take the lead and do something great. This card also indicates opportunity and success.
The Four of Wands indicates stability and security. This card also represents the realization of a project, the conquest of success and the realization of goals. This suggests that your purchase could be beneficial in the long run, as you will find stability in your choice. In addition, this card can also mean that you can trust your decisions, as there are no obstacles in your way.
Based on the interpretation of the two cards, it seems that it is a good opportunity to buy a new smartphone. The Ace of Wands indicates opportunity and enthusiasm, while the Four of Wands suggests stability and achievement of one's goals. Therefore, with confidence in your decisions and with the necessary energy, it is advisable to take advantage of this good opportunity. So, the answer to the question is YES.