With activation of a new 2-year contract, Best Buy takes up to $100 off select smartphones, with deals starting from $29.99. (Prices are as marked.) Plus, most items qualify for free shipping and many offer free activation. (Some require in-store pickup.) That's tied with our mention from last week as the best dollar-off discount on smartphones we've seen from Best Buy this year, yielding several price lows. (For further comparison, we saw up to $100 off in October.) A couple of best bets:

• Samsung Galaxy S 4 4G 16GB Smartphone for AT&T in White (pictured) for $49.99
• AT&T GoPhone Radiant No-Contract Mobile Phone for $74.99