* Dollar aided by Sino-U.S. trade deal, strong U.S. data
* U.S. service sector index rebounds more than expected
* Dollar near 3-month high on yen, gold near low end of range
* Graphic: World FX rates in 2019 http://tmsnrt.rs/2egbfVh
By Hideyuki Sano
TOKYO, Nov 6 (Reuters) - The dollar held the upper hand against its rivals on Wednesday, particularly versus traditional safe-haven currencies, on rising hopes for a U.S.-China trade deal and a string of solid U.S. economic data.
The dollar index against major currencies .DXY was little changed at 97.936 in early Asian trade after rising 0.37% the previous day.
Against the yen, the dollar traded at 109.08 yen JPY= , down slightly on the day but still not far from its October high of 109.285.
The Swiss franc CHF= changed hands at 0.9925 to the dollar following its 0.5% fall the previous day, while gold XAU= tumbled 1.73% on Tuesday and last stood at $1,485.8 per ounce, near the lower end of its trading range over the past month.
The euro stood at $1.1073 EUR= , having dropped 0.49% on Tuesday and was not far from a near three-week low of $1.10635 hit in U.S. trade on Tuesday.
Hopes that the Trump administration could roll back some of the tariffs it imposed on goods from China as part of a "phase one" U.S.-China trade deal boosted risk sentiment in financial markets. survey on the vast U.S. service sector published on Tuesday showed that business sentiment had improved in October from a three-year low in September. ISM non-manufacturing sector index rose to 54.7 from 52.6 in September, beating market expectations.
The rebound is a welcome sign for dollar bulls as a fall in the index would have suggested that malaise in trade war-hit manufacturers was infecting the service sector, too.
The data came after strong a U.S. employment report on Friday.
"On top of Sino-U.S. trade issues, the market is reacting to signs of U.S. economic strength at the moment," said Kyosuke Suzuki, director of foreign exchange at Societe Generale (PA:SOGN).
The positive mood spilled over to the risk-sensitive Australian dollar, which changed hands at $0.6894 AUD=D4 . It was little changed on the day but has maintained gains of 3.4% since hitting a 10-1/2-year low on Oct. 2.
The yuan continued to rally on rising optimism for a trade truce between Washington and Beijing.
The offshore yuan ticked up 0.1% to 6.9948 per dollar CNH= after having risen to a three-month high of 6.9867 to the dollar on Tuesday.
The currency has gained 2.9% from its record low in the offshore trade marked in early September. (Editing by Kim Coghill and Jacqueline Wong)